Our consierge helped us set up round trip from POR to USO through Mears. I think it was $22 pp RT. After we were picked up at our predetermined pick up time by the lobby of the hotel, we picked up one other family at AOA and were off. The way back was a bit more of a pain. You have to call Mears 2 hours before you're ready to leave USO. If you are planning on leaving at park close, it will be chaos where you get picked up. It took quite a while for our driver to show up. The park had closed at 6 that day which also meant it was rush hour in Orlando. Plus with construction, this made the commute back quite a bit longer. Overall it was pretty easy, not too expensive (for 2 people), safe, and the drivers were nice.