you won't find scooby at the breakfast character at confisco grille.
if shaggy and the gang are out in the bus, you will see scooby.
scooby was the character i had at the island dining room last year.
like damo said, the characters alternate between hotels.
you don't need a ressie for that.
it is the usual menu for dinner at the main restaurant inside the hotels.
by chance, a couple of times a week the characters will come visit with youse.
if there is a particular character you want to have at dining, call the hotels.
if you are staying at the hrh and you find out scooby will be at rph, then make your plans to eat at rph on that date.
i don't know if they follow a particular season for dining characters.
if it helps, i was at the island dining restaurant twice (early and mid) in october in the evening and saw scooby there.