I visited in may last year and while there were a bunch of schools in attendance on several days I was there, the lines were never too long and as others have said I wouldn't bother with express. I found the single rider line very useful. I think the longest I waited in a regular line was probably 15 minutes for Hulk one day as they had closed the single riders line as it was longer than the regular one! The first time I went on the Mummy I was the only person riding, which made it even creepier! It was very hot (I'm from the UK, used to rain and clouds) but as long as you keep a cool drink in hand its not too bad. There are plenty of things that get you out of the heat anyway :smiley: Hope you have a great time, try not to worry too much!