If you want to see wildlife, your best move is to sit in the same place for while with binoculars. We had several people come by complaining they hadn’t seen anything, but you need to be patient. There were dozens of sea otters and puffins.
They’re using shuttles because they’ve mitigated the rockslide area, but it’s still possibly unstable and they want to make sure no one gets hurt. They’ve brought it up to highway safety standards.
You can usually choose which one to give them in the check in form. But they only take one. If you choose green card, it doesn’t ask for passport info.
We were in Cozumel in early Feb last year and it was in the 80s and I spent the day in the water. It was great. The way across the gulf was pretty chilly, but it was nice once we got to the other side.
I don’t understand why people want to cruise while infected with COVID. It doesn’t seem like a fun time. Testing before hand reduces the chance of being sick on the cruise, which seems like a good thing.