StormJib
Totally agree.

Others "commit" to the dream vacation and then realize additional cost of travel(Flying from Middle America), etc.

But if you don't want to be stuck with people bailing out, collect something..

My son is in college and I agreed to take him and his friends for a trip... they would just need to take care of airfare and shore food/drinks... All I asked was $100 up front... separated the pack