I purchased my 2-day park only tickets through Disney website (l logged into my already existing My Disney Experience account) and they were automatically linked to each person as you purchase them. Right after purchasing you can start booking fastpasses from 30 days out from the day of purchase...It will tell you this as you prepare to charge/book them. I was able to "play" around with fastpass for several days before I actually needed to book 30 days out. The actual "credit card" tickets came in the mail 7 days later.