Being at 85 to 90 percent is a huge difference. My 2 cruises on the koningsdam where bursting at the seems, well above capacity. One of those weeks was thanksgiving. From the sound of things every cruise was booked like that on the koningsdam in December. While I didn’t have problems with the cleaning of my room, my stewards lost multiple things including my 500 day medallion. The front desk said I had it. I don’t recall having an issue getting water in the lido but I tend to go earlier because I can’t stand the crowds. Hal doesn’t seem to be able to handle the over capacity so don’t book to the level. It’s not good for anyone, crew nor vacationers.