Well, for one, money, heh. For two, I don't live as close to USH as a lot of you do (about 3 hours from it). I drive enough as it is weekly, thanks to work (I live an hour away from work), so going to USH isn't quite the "excursion" that it once was, since so much more driving has become part of my life (unfortunately). Also, the park is clearly being changed in various places right now, and rather than see it in construction throughout the next few visits, I'd rather wait until Potter itself arrives (which I am VERY excited for).