Yes, it's not that it is difficult. I was debating the reasons. Easy to do though. When you removed glasses before was it NCL security staff asking you to do so, and since the new rule for security photo without glasses? It would strike me as slowing things down if they had to ask all people with glasses to "de-glass" first when going on and off the ship - and if they don't, then they aren't (arguably) doing as good of a visual check, perhaps!