From a buyers standpoint. I can see where some first time buyers may be a little leery leaving the games on for free play, with the fear that the game may become damaged before bringing it home. BUT Most of these games have been played, nudged, etc. for more than a day by the time you purchase one on a Saturday afternoon for example. A few more hours for the sake of the show won't kill it. I like the idea of early removal fee being worked into the price though in case there are extenuating circumstances.
SIDEBAR
This was my first time at the Allentown Show and I really enjoyed it. Wish I would of went for 2 days. Especially when purchasing a machine. One day should be dedicated to business, finding/buying and working a deal out for the machine. The other to enjoy the show! I will be sticking to that plan next year.