We used SAS last year to get to the POM and from POM to FLL.
We were picked up from a hotel, and were the last on that shuttle, I think there were 6-8 people in it. Took about 40 mins or so to get to the port. The driver ( I can't remember his name now) talked about what we were passing, and then about how his experiences on ships. He was interesting and friendly, and made the ride go by quickly.
Getting back to FLL was easy too. Called when walking off the ship, and then again after customs. Driver met up out front. He circled and parked for about 5 to 10 mins waiting for another couple. Shuttle was full, I sat up front and again, the driver was friendly and made the ride back easy going. Dropped everyone off at their terminal.
Planning on using them again this Oct.