RCI has a terminal that you can wait in. You will not be there very long. Once you check-in at the terminal you can board the ship right of way.
Mary Lou Scanlon
NCL Pride of America April 24, 2010
NCL Epic February 12, 2011
RCCL Allure of the Seas - September 18, 2011
Celebrity Eclipse - February 11, 2012:
RCCL Navigator OTS - February 9, 2013
As far as we saw last week (Apr 6) you shouldn't have to worry about waiting for boarding. We left our hotel at the airport at 11:05 in the morning, unloaded at the pier, checked in and were on our balcony before noon! Otherwise it looks like they have a large waiting area in the terminal.