That was said by CottontailDiaperland might be a bit too narrowly focused. Perhaps "Childhoodland?" Or maybe they could just do this as a store or a restaurant in the park. Basically, all the tables, chairs--the whole place!--would be oversized so as to force adults to climb into their chairs, stand on stools to reach the sinks in the bathroom, etc. And, of course, there would be only a "kids' menu." The food would be served on enormous plates to make it look like kid portions. I could see that working, actually.
So, how cool would that be? I would fully support that. My TBness aside, that is actually a pretty awesome idea. What do you guys think?