This has been an interesting thread. There have been other threads discussing cancellations and inviting treating family friends, but I like the discussion on whether to charge or not. I also agree with the social market contract concepts, but each has varying commitment levels based upon individual and cultural perspectives.
We have had mixed experiences.
2005 Had a large gathering (my side of the family) planned for 4th of July to meet several peoples schedules; we booked a 2BR and 2 studios. Had several back out in plenty of time, so we were able to cancel one of the studios. Worked out okay, but we specifically booked the dates around the people that cancelled, so that was not received well. Did not charge for points, but after the trip my sister did send us a nice Disney gift worth a couple hundred dollars.
2007- Another large gathering (DW side of the family). We booked 3 Inn rooms at VB for 4 nights for the full crew, and 1 2BR at BW for 2 nights with almost the full crew. No cancellations, but we did accommodate scheduling (Reservation started on a Sat night) and it caused more point usage than I had originally planned. Again, did not charge for points, but guests did treat us to several nice dinners.
2008 Travelled with and treated good friends to a 1BR for 5 nights No cancellations, they were first timers and did okay. Did not charge for points and they did not do anything financially to thank us. They were very gracious and truly appreciative of the lodgings.
In the future, I dont know how well handle inviting/bringing guests. We bought the
DVC to share, but with current economic times, not sure if we can afford to be so generous.
Good luck and Peace,