These postings are inspired by Mark Gibson's hopes to check out the new Harry Potter theme park coming to Universal Studios Florida. What I've read is that it isn't a separate theme park per se, but will be a revamp of the Lost Continent section of Islands of Adventure. Jim HIll has more on his site, especially here. It is an interesting section of the park, but I think the main problem was that it was the only section that wasn't based on a pre-sold property. And it leads to a tip I've read that has served me well in amusement parks: if given the choice between right and left, go left as more people choose right. This might make Mark mad as the Harry Potter section is to your right when you enter Islands of Adventure, but I'll guess he'll have to take comfort in the other lands he'll encounter before HP, namely Marvel Super Hero Island and Jurassic Park, among others. Another advantage is in addition to the tendency to go right, a lot of people will go to the Harry Potter section first and make it very crowded very early. By the time you make it to that section or return after your mid-day break (you are following the suggestions of "The Unofficial Guide" I recommended last time, aren't you?), the crowds should be thinned out.
Another suggestion I think you won't be too crazy about is to not head down there the minute the Harry Potter section opens in 2009, as there's sure to be a bit of a shakedown with the new section and they address some of the crowd issues that are sure to come up because of JK Rowling's insistences for the park (again, see Jim Hill for, but one example is that she wants guests to enter the park as Harry, etc enters wizard alley via the Leaky Cauldron pub, by hitting the right brick) I would suggest giving them a few months to work the bugs out.