My son has always wanted to go during Food & Wine festival. I am planning a short trip in late October for my family(me, wife, 2 sons). Already booked our resort. Me and my oldest will go for sure. The problem I have is that because of a potential conflict with my youngest son, we wont know for sure if he and my wife will be able to go until about 30 days prior. We are coming up on 60 days until trip. Can I purchase park tickets now for just the two of us so I can make fastpass selections and add the other two later if i need to? If I purchase all four now, book FASTPASSES and find out later son and wife cant go, are their park tickets still good for a later trip, even though i booked FASTPASSES for them? Any help would be appreciated!