First... I am not thrilled with making an "appointment" to ride. As someone said, what if you get off of a ride and you want a re-ride but you can't because you have an "appointment" at another ride and in order to make it there you have to start walking imediately!
Secondly, for the people who use these "Express Passes" (as IOA calls them), USE YOUR BRAINS!!! I was at IOA the first week of March. With the exception of Spiderman and Dueling Dragons, everything was a walk on or at most a 10 minute wait. All but the first seat of Hulk was a walk on. Some express pass holders were a bit upset because they said (and I am only going on their statements) that it took them longer to wait in line to get the pass than it would have taken them to just walk up and stand in the queue line with the rest of us common folk. Again... USE YOR BRAINS!!! If the park is not full, don't worry about the "Express Pass"!
I can't vouch for busy days at the height of the season, but all I know is that when the signs say wait times are between 0 and 15 minutes, don't bother with the passes!
As someone said above about Hulk, the queue lines are not very well marked at IOA. On Spider man there was a wait of 35 minutes, but my wife and I wanted to ride it again. Because of a mixed up queue line, and a gate that was not closed, some of us wandered in and accidently got into the fast pass line when we turned a corner and saw a split in the queue line (because of this missing gate). A few moments later a very paniced worker came running up behind us and said that we were all in the wrong line. There were about 20 or so people who made this mistake. Making a snap decision, she asked my wife, "Are they with you?" (the people behind us), my wife said "No", and the worker rerouted those people to the regular queue line, but left the rest of us peasants in the "Express" queue. We only had to wait in line (though the wrong line) for about 5 minutes! This case worked out well for us ignorant few who took the open gate that was not marked, but it probably upset some of the "express passes" that came after us.
*** This post was edited by SLFAKE on 4/4/2001. ***