The park includes a 100 by 200 feet (30 m × 61 m) wooden roller skating rink, open year-round. The rink has had a pipe organ for most of its history; since 1955 it has been a Wurlitzer model with four manuals, moved to the rink from its previous home at Portland's Broadway Theatre,where it had been installed in 1926.All pipework for the organ is mounted on a platform hanging over the skate floor.
I think you need to contact the staff or look on the website for this type of information, I've been going over 30 years and can't answer that, I imagine most customers cannot.
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