Docmont--I get where you're coming from. Depending on your actual physical condition, get wheelchair service. While wheelchair service is often very spotty is the US, it is OUTSTANDING in SXM. Trust me.

Other than wheelchair service, as others have said, there are currently no jetways operable at SXM, unfortunately not since Irma. The good news is that some airlines have ramps down from the plane (usually only at the front of the plane), so you can roll your carry-on bag down the ramp. Usually AA has a ramp at the front of the plane. Not sure about other airlines. So, if you can make sure your seat is close to the front of the plane, that is good, just go down the ramp at the front. If not, just wait till others get off the back of the plane, and head toward the front. When you are going home, just tell the people at the gate that you cannot climb stairs, and they will let you board the plane from the front.