Oh, good question. We were on the left.... I THINK both are good. If I did it again, I would probably go with the right side.... I think there was more water on the right for a while. You are going to be taking in a lot on either side though, especially if you get to ride the glass topped car.
My wife is terrified of drop offs. I saw around minute 45 that the train was at a very big drop off with hardly any shoulder on the tracks. Do you recall if there are a lot of these drop offs? It would make her extremely uncomfortable if there are.
Hey Mike.... I do remember a couple of places that might make someone afraid of heights and drops uncomfortable. We REALLY enjoyed this though... maybe not riding in the glass topped car would be something to consider.