Let me preface this by saying I am disabled and walk with a cane:
Excited from looking at the commercials about the ship, my wife and I decided to book this cruise in January 2016. Then came the news reports about having to turn back because it sailed into a storm. Twice. Regardless, it was booked, we still went on the boat.
Check in: no problems whatsoever, the online check in was a breeze and the baggage handler took our bags, tagged them and scanned them. A wheelchair was requested prior to boarding but was provided after we asked for one at the dock. ID photo taken at the terminal and off we go :)