Hi Daisy- I hope you have a great time. Can I suggest you look at water temperature website -sorry but I couldn’t include the link (search sea temperature info green island)that would be far more accurate than my guesses. I wear a stinger suit/light wet suit all year round as it means I never need to use sunscreen

No it can not

There is ground floor accommodation and the paths go down to most of the beaches, so you could walk the few metres to the lounge chairs or water for a swim. There is also a number of swimming pools. The longest you would have to walk with a walker would be from the boat to the island as it is quite long and I am sure if you let management know they could take you in on one of their small golf cart type vehicles.

Yes, although the snorkeling trip I took was not spectacular.

Sorry, it's no doubt I'm too late to help you. We travel on the cheap when we can. It was too expensive for us to eat in the dining room, so we ate our late meal at the poolside snack bar just before it closed and maybe a snack later. Usually holds us over until their nice breakfast.