Mariner is an awesome ship.
In St. Maarten your best bet is to buy the unlimited water taxi pass. The water taxi is a lot of fun And you go can back and forth freely like if you want to go back to the ship to go to the Windjammer for lunch. The beach just where the water taxi lets you off is great too. We paid a restaurant who set up some beach chairs and umbrellas for rental of the chairs and they let us use their clean washroom lol.
In St. Maarten your best bet is to buy the unlimited water taxi pass. The water taxi is a lot of fun And you go can back and forth freely like if you want to go back to the ship to go to the Windjammer for lunch. The beach just where the water taxi lets you off is great too. We paid a restaurant who set up some beach chairs and umbrellas for rental of the chairs and they let us use their clean washroom lol.