1) at the terminal they will be multiple lines..one line for latitude/priority, one line for regular people and one line for the suite people. when they check your document, they will you tell to join the priority line for the check in
2) concierge is useless and not a real perk, they dont do anything for platinum people. they only focus on the suite people
3) behind the ship tour is back, go to the cruise next desk to sign up for it
4) you can make reservations online, about 125 days before sail date. you dont need to wait until you onboard the ship