Is there shuttle service from the Enterprise MIA return location to the airline terminals?

Yes, but we just walked.

Yes, there is a service.

Yes. There is a train

Supposed to be but they suck....take a cab, other people are rude and ruthless even if you have someone in a wheelchair..animals!!

Skytrain

Yes there is a shuttle. Train to most rental car agencies. Along with the people mover. Allow plenty of time, lots of walking at MIA.