We went to one of these presentations about 10 years ago and they way they presented it had us almost signing up to buy a timeshare.
We asked for a few minutes to think, and then we managed to work out that we weren't getting any where near as good a deal as we'd thought we were.
We told them we were not going to be buying and asked if we were actually going to be offered the luxury holiday we had been promised for attending.
"Oh yes, of course, someone will be along to sort that out if you just go into the conservatory area."
We waited and waited, and were just about to go when a lady came and explained that we only had to pay a basic fee of about �200. The catch was, we had to be able to go whenever they called us. In other words, they would call us without warning on any date within the next six months and offer us a holiday leaving the next day, or even just a few hours later on that same day!
Obviously not many working people are in a position to do that so they had very few takers, unsurprisingly!
I would imagine there will be some sort of catch along these lines.
If you do go along, be warned, they are very good at what they do, making it sound unbelievably good value and persuading to buy. We actually felt very pleased with ourselves afterwards just because we had resisted the temptation!