Has anyone done these and felt they were worth the freebies? I have always been tempted to sit through one knowing it will be a very high pressure sales tactic and prepare to say no a million plus times, but what are they like? How long do they keep you "captive"? At some point do you just say "give me my free stuff I'm leaving"? Have you ever not gotten the free items promised? Did you negotiate for extra freebies before hand? Just seems like a good deal if you can say no for two hours to get a couple of free show tickets. Wondering if there are any other catches. Thanks again in advance for the advice.