Cruisequeen....Last year i was hobbled by a broken leg. When it came time to stand in line..we got in line..I then turned tothe guy behind me explained I had a problem and would he mid letting me back in line when he approached the front...NO PROBLEM. Did the exact same thin this past April (another broken leg).
now maybe it was because we were sailing with Texans that they were friendly, but it worked two times in a row. Give it a try.

Also, remember, 90% of those "Cruseline" employees that check you in are either temps or part-timers with no vested interest in you or your vacation. The option would be full time, trained, EXPENSIVE employees that would, in turn, cost you more money for your cruise.