re: Looking for Universal Studios Recs

As another poster mentioned, staying at any of the on-site hotels allows you early admission to one of the parks each day. You definitely want to use Early Admission to go on the Harry Potter rides, as they don't have an Express Pass option. Whichever park has early admission that day, do the Potter ride first, then get in line for Hogwart's Express (a train ride that actually takes you to the other park). Once you get to the other park, head straight for the other Potter ride. You should be able to knock out the two Potter rides and Hogwart's Express in an hour.

The Potter rides, along with new Kong ride, will likely have the highest wait times during the day, which is why you want to ride them first.