I'm changing that sentence around...."stop at the Yoda Guy if ...you can navigate up stairs with the wheelchair since it's on the second floor. And if Star Wars SERIOUSLY interests you."
I liked Sint Maarten, and all we did was wander leisurely around. We did take the water taxi, and I don't know if that's accessible, but a taxi gets you there, too.
OP if you haven't taken a good look at the St Maarten port, do so. There's a road from the port area to the Front Street (or the Dutch version of those words). There's also a water taxi that takes you to the middle of the front area of the beach.
There's a decent free beach there. Plop down a towel and have a nice day. Or rent a lounger/chair from the person that pops up when you sit down on said lounger/chair, and have a nice day. There are restaurants and bars and it's all pleasant. Although I haven't been there (darned DH and DS who insisted on the very boring Hard Rock Cafe), reviews and looking at the menu tell me that my family will be heading to the restaurant that is named after a Blue "female dog".
Some pictures of the free beaches right there on the beach side (lol) of Sint Maarten. You can also see the main drag there, and how wide and good the sidewalks are.
If anyone is in the market for fake Legos, there's an electronics store that sells them. Don't have a dad there during negotiations...DS and I were doing just fine (with my saying "no no no" to the f'egos as I call them because I meant "no no no") until silly DH came up and then the price stopped coming down.