Those instructions get through to the list of shore excursions but I think the OPwants to know how many of them are booked on a particular cruise already. And which ones are still available for a booking. I don’t know any way to find out that information before you sign up for the cruise
He is reading restrictions that have to do with flying and the TSA limitations. The cruise ships have no such limitations for size or the type of spray you can bring.
Since the restart the process for arriving at the terminal and then boarding the ship has changed. When you do your online check-in, you choose a time to arrive. You won’t see different queues in the terminal for Aqua, Concierge, Elite any more