We have used Tim Air twice and will be using it again in February. We have had success both times with getting to the airport and through customs and then to Tim Air. We have never waited more than 10-15 minutes to get in the air after arriving at TimAir. Now, I guess it is the luck of the draw. If you get there and the plane is not available then you will have to wait. I have read on the message boards of some people having to wait. Both times I have made reservations through timair.com and they were waiting for us when we arrived. No matter whatit is definately a nice way to see the island and get to the hotel. Enjoy!!