Can I request specific dining rotation now? We don't cruise until Feb next year. I really want PLA, so that we are in Lumiere's for formal night and Parrot Cay for Pirate. Where do I request this? We booked through Costco. Also, is there any chance that the schedules will change, so that if I request this and get it, but they move formal night or pirate night, I will be messed up? Once this request has been made, can it be changed?