Hello,
I am getting married at Beaches in May 2015 also. We are expecting about the same size party as well. If you book a specific number of rooms, various "options" are included. For example, if you book 11 rooms you get a free cocktail hour and if you book more than 20 rooms you get a free 2 hour reception. I did not look into have one of the restaurants close down but that is not a bad option to look into. If you have anymore questions, feel free to contact me.