We just got back from WDW, and I have a question that I should have discovered the answer to on that trip, but it just never came up:
I know that when you pre-book your initial 3 FPP, you can’t choose the same ride twice (e.g. you can’t make 2 of your first 3 FPP for Splash Mountain). But once you’ve used your first 3, and are going into #4, #5, etc., can you at that point start choosing rides that you already got FPP for earlier?