We camped there just before thanksgiving for a night and fished all night on the Galveston side. I would say the Galveston (north) side of the pass has better fishing. We had no problem with getting stuck or anything. The sand was packed down from some recent rain. I have also heard some really bad stories about getting mugged or shot out there, just keep your guard up and have a fire. Maybe bring a pistol or even a look alike play pistol just in case you need to scare somebody away.
You'll always miss 100% of the shots you don't take.