Its all electric. We do have a couple of the RC locomotives but they are just there for display as when we run them they get a lot of interference at every show we do, must be from the other radio frequincies used by the other layouts. Never been able to figure it out, even when the batteries are in and our remotes are off they can just start running and jolting back and forth....spooky!
This is one of the biggest shows in the NW, you should really try to make it.