I have to ask this, and I really don't mean to sound sarcastic, but..how do all of you get to your home airports if you have so much luggage/so many people? I just read posts from so many people that tell us how much luggage they have, that all the people in their party won't fit in the rental car, the luggage won't fit.....what kind of vehicle did you use to get to the airport in the first place?
If you have too many people for a rental, then I would have a couple of people take the DME bus, with some of the luggage being checked all the way through to the resort. Since you get two luggage tags per person, you should be able to check at least 4 bags through, if you send two people on DME. Then, the rest of the party can travel in the rental with the rest of the luggage. If you are flying home on a participating airline, then you can all check your luggage at the resort, so it won't be an issue.