We had a two day pass with the express option for the first day. Arrived at the park Monday June 28th at 8:15 (used valet parking). The line was at Jurassic Park to enter WWOHP. We were in line for FJ by 9:00, and we were done by 9:45. Did not go in the Wand Shop as the line was crazy! Did everything else and exited around 11:00. By noon the line just to get into the WWOHP was past the Spiderman ride in 90 degree heat. Rode everything else in IOA and Universal with the express pass and left for the day by 6:00 p.m.
Returned on Friday night the 2nd of July. Used the $3.00 after 6:00 p.m. parking. There were not any line-ups for anything. My daughter rode FJ in single line-up (5 minute wait). Toured around the area again. Still could not get into the Wand shop without waiting in line. But, there was no line up for the Three Broomsticks. Went and rode Spiderman, and Jurassic Park (lots of fun in the dark). Went back to WWHOP around 9:00 p.m. and toured through the castle at our leisure took lots of pictures and watched Dumbledore, and Harry, Ron, and Hermione.
Evening is really the best time, far less people, and the heat level is much lower. Take rain ponchos and ride the water rides.