Category 1, 2 & 3 are all able to check in at the special concierge desk. From there, you'll be escorted to the couch area to await boarding. On our first cruise, we had a CM stay with us right up until we boarded. The room keys are kind of cool, they are gold instead of blue. Once boarding is announced, those guests needing special assistance go on first, followed by concierge and then general boarding begins.