We booked our cruise for NEXT May (southern caribbean) - is it too soon to do the Fun Pass?? Also, we are booking the entire trip (cruise and flight) through our agent who is going through Carnival. Because of that, we won't know the times etc for the flights until right before we go. Is that information necessary to do the fun pass? I know we need some number to do it - is it the booking number on the Carnival website?