Love Sint Maarten, but I will confirm the traffic can be a pain in the patootie and I just do not want stress/traffic on vacation. The anguilla ferry leaves from the french side, so it would be a real schlep of a day to do that. I agree, when the savings ends up being just a few dollars, get yourself the security of booking through the cruise line. Shame you'll be somewhere that features shopping as a major attraction, and the shopping is good, I feel better than St. Thomas, but if you do choose to do some beach time, very easy to just go to Great Bay via the water taxi from the dock or just walk a bit further to the well organized cab stand, and a taxi to Orient Beach is easy, was not long or stressful, and the beach is beautiful, even if some of the au natural folks are not (our son was 9 when we took him, a couple giggles and he got over it quickly).