Hi. I'm doing the check-in for the first time on-line. Last cruise, we stayed at the Hyatt and checked in at the airport. Since that's gone, I'm going to check-in as soon as it opens, hoping to get an early PAT. Once I check-in and get my PAT, can I go back in at a later date and make changes(payment options, etc.)? Also, do I still get the paperwork booklet they send about 10 days before your cruise? Thanks for the help!