Hi - this is my first time planning a trip to Disney, and I'm trying to figure out how to book rooms. I need three rooms - one for me, DH and kids, one for in-laws, and one for my mom. If all three are booked separately and then I receive a PIN code, can it be applied to all three? Do the reservations need to be linked? Or is it just better to reserve all three rooms under one reservation? Thanks for any help!