I just wanted to come back and say thank you to those who offered advice. Even though some of it was tough love, I needed it. Prepare, long post ahead.
I should clarify a few things. Regarding the "difficult to communicate with" comment. The bride put the groom in charge of wedding pictures. He was looking for a budget photographer. As I mentioned in a previous post, he made a comment to his brother (my friend) that if they couldn't find a photographer to shoot it below a certain dollar amount, then they just wouldn't have professional pictures and just get it from their friends and family's point and shoots. They had the disposable cameras at the tables, as well as the hairstylist/makeup artist (a friend of the bride) was taking a LOT of pictures of everything. My wife (assistant) and I were thinking that those two measures were in place in case their first-time wedding photographer totally botched the job 
With regards to communication, for example, when my friend said that his brother was interested in how much we would charge, I sent him a message on Facebook. I told him I was honored that they would consider me, that I've never shot a wedding before, and asked a few questions. Since FB tells you when the message is read, I saw that he read it about 30 minutes after I sent it. A full two weeks later I still hadn't heard from him and my friend said he asked him about it, and he said, "Hmm I never got the message." Anyway, it was small things like that. I emailed him the contract with the price in it, requesting a deposit (1/2 of quoted price plus tax). He said he would get it in in the mail the next day. Two weeks later I have nothing and I text him, "Hey! Just checking to see if you received my contract? Thanks!" And his reply text was, "Tax?" 
So, that is what I meant by communication problems. Yes, red flags, but I continued on. After the "Tax?" comment, I told my wife that if he gave me any more trouble I was going to tell them to find someone else. However, he was nice and accommodating after that.
Anyway, with regards to the day. It could've been worse and better. So, I guess it was a normal wedding, right? My 2nd shooter wound up backing out on me...so it was just me.
The ceremony was originally supposed to start at 6:30 but was pushed back to 6:45 because apparently during the rehearsal the night before, the setting sun was coming through the side windows and blinding the attendees. I told the bride and groom a few days before the wedding that I wanted to get as many pictures done before the ceremony as possible (bride, bridesmaids, groom, groomsmen, family shots, bride and daughter, etc.). I asked if everyone could be ready by 5, so that would give us 60-90 minutes to take all shots. Remember, they chose not to see each other before the ceremony. We arrived around 3:30 and took some detail shots of the center pieces. Since this was a low budget wedding, the bride and bridesmaids did all of the decorating that morning (and they did a pretty good job if I say so myself). The bride and bridesmaids were all there, but were not really getting ready. I was done with the detail shots and asked for the dress. I struggled with the dress shots as I couldn't find a good place for it. Inexperience. It was incredibly windy outside and I had to settle for some shots underneath a tree that was in a small courtyard (to shield the wind). I wasn't too excited about those shots. I then grabbed the rings (the bride was very, "You want the rings? Um, okay? Sure?" She acted surprised that I asked for them. Did some detail shots there. I took some pictures of the bride and bridesmaids just hanging out in the room. They had one person doing hair and makeup for bride, 3 bridesmaids, and bride's daughter. After a while, my wife pulled me out of there because she knew that they just wanted to "hang out" for a while without me being in there. The bride made some mention of getting some pictures when she gets her hair and makeup done.
So now, I'm out of the bridal room and I have nothing to photograph. It felt very strange. The groom and groomsmen were not there yet. So I took some of some family arriving and conversing. The groom and groomsmen finally arrive. I take a few prep photos and then take them outside to get some shots. The grooms parents and grandparents follow and we get some with them. My wife comes and grabs me and tells me they are doing the brides hair. I run back in and she is just now getting started on her hair and makeup (and I think the time was 5:45). 2 of the 3 bridesmaids were done, and the daughter was not even dressed. It was a little after 6 before the bride was done. We quickly get her outside and take a few shots. She was incredibly uncomfortable in front of the camera. However, I know it was completely my fault. It is my job as the photographer to put her at ease and get some natural reactions. We tried a lot of different ways to get her to relax, but she was probably the most rigid and nervous subject I've ever taken (and I can see why, its her wedding day). So we got a few keepers. Its 6:20 and no daughter. My wife runs inside to find the daughter. We knew that probably one of the most treasured pictures we could get before the ceremony (in the natural light) would be of her and her daughter, since we couldn't get any B&G. 6:25 and finally the daughter arrives. 20 minutes to the ceremony. We snap just a very few quick shots of bride, daughter, and bride's mother. My wife tells me that at 6:30 is when the maid of honor's hair was started.
Needless to say the ceremony is delayed about 15 minutes. Our friends (grooms' brother) tells us that some of the attendees were worried that someone had changed their mind. They still thought it was at 6:30 and it was 7 and still no ceremony. Ha.
Anyway, the ceremony came and went. Very quickly. I underestimated the extreme low light of the ceremony and went with too slow of a shutter speed because I didn't want to use 3200 ISO (I should have, in retrospect. Better to have noisier images but not blurry). Yep, inexperience
. I still was able to get some. One thing that really threw me off was the bride walking down the aisle. I got some shots of the groom seeing her for the first time. 3 quick shutter snaps and I turn around, the bride is halfway down the aisle (a very small room) and walking a normal pace. About as fast as you would walk from the couch to the fridge. It took me by surprise and I messed that up. No excuses. My biggest regret of the day and biggest screw up. Even the minister remarked when they got up to the front, "Wow, now that was fast! You must be ready!" And everyone got a good chuckle....except me.
I should've switched out to my prime or used a flash. This particular room was not very attractive. Goldish/beige wallpapers abounded, and the light was 100% tungsten. Very yellow. I was anticipating some natural light come through the side windows (the entire left side of the room were those rounded down to the floor windows that you might see in a greenhouse). However, since the ceremony started practically at sunset, I received no help there.
This post is long enough. Everything else went "alright". First dance, dinner, general dancing, etc. The last big problem came at the send away. The DJ gave me a heads up they were about to leave. So I grabbed my OCF and went outside to set it up. There were double doors, but the left door was locked. I put my flash stand just outside of this left door, took some test shots and was pleased. Everyone filled out and we were just waiting on the B&G. They were finally walking down the hallway to come outside when one of the groomsmen started to unlock and open the left door. I could tell these was going to block my light. The B&G were 10 steps away from the threshold, bubbles were flying. I start to yell "Hey hey! You're blocking my light! HEY!". Some others notice this and tell the B&G to stop. My wife grabs the stand and holds it up herself over the crowd and we get a couple of pictures.
Anyway, it was quite an experience. Thank you all for the tips and advice!