Oh you'll go on "vacation" but you'll have to be pichted a high priced/high pressure timeshare for 4-5 hours. If you can say no without feeling gulty, sometimes it kinda works out. Done it before and said no, no, no, no, got my vouchers to red lobster/Disney (whatever) and said no again, and again.
Don't say yes, be the 10% that gets all the free crap without blowing 30K-40K on a useless timeshare with $500 a year maint fees