This is why I really dislike that everyone and their dog with a DSLR say they are a wedding photographer. Sorry but to me you are the lowest of species when it comes to photographers (IMO). You have 2 weddings to shoot, you won't spend the time to visit the sites to understand places to shoot around the location, so you go to a forum asking for cheap advice. You don't even Google the place yourself and then even better you ask about lighting!! No mention of time of day you are shooting etc... people like this drive me nuts, call yourselves professional etc... and won't even take the time to do it right.
Shame on you for charging any of these people any money at all.