Without getting this thread shut down for discussing vaccinations, I will just say that I agree that
DCL made it very clear that they were not screwing around with these COVID protocols, and anyone who didn't read closely or just assumed they knew what the rules were has no one to blame but themselves.
I can't imagine having to look my kids in the eye - at PC, with their suitcases in tow, ready to board - and tell them we can't go on the cruise because Dad f-ed up and didn't pay attention to what needed to be done.
But I'll bet at least half of the parents in that position would just blame it on Disney in order to save face.