Are you talking about room blocks? Otherwise, I could be wrong, but I thought there was just a minimum expense of $10,000 (more on weekends) and a minimum lunch/dinner expense (which goes towards your overall minimum expense) of $75/$100.
Padisneyfour, since it sounds like you're concerned, you should ask the FTW folks directly. Give them a list of ceremony and reception locations that you are considering, and they will tell you if there are any minimum / maximum guest limitations (and any other limitations).