Once you make a FP selection, you cannot overlap the FP window (which is 1 hour) with another FP. For example, if you have a FP for 7DMT at 9:30am, you can't book another FP between 9:30am to 10:30 am (say, Space Mountain at 10:05am). One strategy is to chain FP windows together as closely as you can (a 3 hour block) as early as you can so that you can then start trying for your 4th FP (and more) once you're in the park and finished your other FPs. You are not required, however, to spread FPs out over morning, afternoon and evening selections. The system will allow you to book all three FPs in the morning (for example) so long as you observe the 1 hour window for each FP that you have.I did well for my first but it only let me book one fast pass in the morning, one in the afternoon and one in the evening. Is this normal? It kept saying you already have fast pass booked for this period?
I will say that the "forbidden" times due to an existing FP are not always clearly marked on the website when you're making selections (they are easier to spot if you ask for more available times - the blocked times will be outlined in black). The website will give you available FP times that you both can and can't use (but may make it appear that you can't use any along with the warning that you already have FPs booked for that period). It can be a bit confusing.