Every time we have used DME to go to the airport there has been a crowd waiting for the bus. The last time, our bus was late (the one before ours was still there) and ours arrived almost full. We made long stops at 2 other resorts where no one got on because we were full. At Terminal A they unloaded a wheel-chair person who was supposed to go to B, and had to reload her again with chair and luggage. When we got to our terminal it was almost time for our flight. Fortunately, the security check was quick, but we had to RUN to our gate where the passengers were already boarding. I've always wondered what would happen if DME caused someone to miss their flight.... Anyway, you need to be prepared for anything!