25 years ago I walked into a club and I forgot to take it off. A staff member approached me and asked to take it off, which I did. They were shocked, 10 minutes later the manager asked me to put my hat back on. Lol.
P.s I had lost my hair and colour due to chemo, it was a bit freaky.
It is a shame it happens, but I think the letter is quite reasonable providing the various options. Of course for some people none of the options would suit.
I do wonder how much in advance the letter was sent. If it was only a few days, that may rule out some options for more people who do not live close to the ships home port.
Just recently, we had Kuri Bay cancelled for cruising in the Kimberley, up and around Cookatoo Island and beyond. Much better than being anchored in the bay for 8 hours, and or possibly visiting a Pearl farm.