LOL, thanks for all the help everybody. The only reason I asked 2 hours before the fight is because I was packing and my brother told me that he thought photographic equipment could be taken as an extra carry-on, then I found the TSA thing online... I didn't find an answer on the southwest site in time... and because of all your answers, I didn't push it, and just took the normal amount of carry-ons.
But... upon approaching to land in vegas, the pilot come over the radio thing and said that the flaps wern't working and he'd have to use the wheel brakes as the primary braking system... Ruh-roh! The pilot said "but don't worry because the runway in vegas was pretty long so we should be ok" I was like, "yikes! that's not something I want to hear from a pilot!" lol Anywho, after the plane circled for 30min, we landed a bit rough and there were like 5 ambulances, 3 fire trucks, and a butt load of fire/rescue trucks who escorted us into the gate, pretty cool, lol. Everybody was fine.
Merry Christmas everybody!