At some point I'm going to go to another one of these presentations...with a childhood friend of mine in tow who happens to be a get-people-out-of-timeshares lawyer. I'm torn between asking "Why the hell should I pay anything when people are offering weeks here for $1 on eBay" loudly enough to disrupt a few hard sells around me, having /him/ ask a bunch of tough questions at just a few decibels above standard conversation level, and just having him hand out a few business cards.
(Yes, I want to make these people twitch. It's nothing personal, it's just business. In fact, I think if he hands out enough cards we might get him to write part of the initial buy-in cost off on his taxes.)