I would guess very, very few people visit theme parks (Disney and Universal aside) because of the theme, America or otherwise. They go for the rides. If the theme, America or otherwise, is carried out in a way that creates a pleasant environment, guests will remember the park’s nice atmosphere as a reason to return.
I was a teenager when Marriott’s announced their upcoming Great America parks. In the beginning of the publicity campaign, they put heavy emphasis on the America theme and the promise of live entertainment (the Bicentennial was approaching, after all). It wasn’t until months later, when I drove past the Santa Clara site and spotted the recognizable support structures for the flumes and the Whizzer coaster, that I really started to get excited—Relieved to find that, despite the initial publicity’s emphasis on *everything* else, this place was, indeed, going to have some big time rides, the likes of which the Bay Area had never seen before.
I’m sure that, on opening day, as my car full of friends and I waited in a long line of cars at 6 in the morning to get a good spot in line at the entry gate, most of those thousands of arriving people would have come no matter what the park’s chosen theme had been.