I have a friend who just got back from WDW over the holiday. They were able to use their fastpasses anytime from the start of their "hour" until the park closed. For example, they didn't use their 10:05 - 11:05 FP for BTMR until 3pm. More than one CM told them that you can't use the FP BEFORE the time printed on it, but you can use it any time afterwards until park closing. This is not how I understood fastpasses to work, but if it's true, great! What am I missing?