They are currently NOT operational, no. The 'official line' from the airport is that the jetways are SUPPOSED to be operational sometime this fall, but I wouldn't bet the farm on it. As Pat said, some planes will have the ramp to deplane, but they are always only on the front stairway only. On recent trips, AA from Miami has always had a ramp in the front. I go down the ramp in the front, and also use it when I leave, regardless of where my seat is. Wheelchair assistance in SXM is wonderful, and does help greatly with the (sometimes) huge immigration lines.