This may have been covered but the FP + threads are so long and many i haven't read them all so i'm sorry if this has already been covered. When you book your fast passes make sure you book all 3 at the same time. My step daughter booked for our group and only booked 2 fast passes one day because she wasn't sure what she should book for the 3rd FP. She assumed she could go back on line the next day to book the 3rd but we found out we can't. When we went to book the 3rd for that day we discovered we would need to cancel all our fast passes for that day and start from scratch or we wouldn't be able to book the 3rd fast pass for that day. One of our fast passes that day is Toy Story M which is hard to get so we don't want to cancel in fear of not being able to get Toy Story M. back. So the day we do the Studios we're stuck with just have two fast passes until we use both and Toy story isn't until the evening. So don't make the mistake we made, book all 3 fast passes at the same time on each day you tour, use it or lose it.