We did the Disney parks, Typhoon Lagoon and Aquatica last April so this trip we are looking for what we missed. Universal Studios is on our list - what is Islands of Adventure? We have a 15 and 13 year old (both love Harry Potter). What is the Harry Potter package I've been reading about? We've heard about different flea markets - is one better than another? Also, are there any sky diving simulators? Read about a zip line through the forest - anybody have info on that? We are a fairly adventurous family and this is probably our last visit to Orlando so we want to hit the top spots. Thanks!!