I’m guessing that they’ll be on whatever side Frank Zamboni decided it should be on.

I’ve only ever heard an Ice Resurfacer being referred to as a Zamboni in the USA. There’s not a lot of ice to resurface in Australia and in the Netherlands we used to skate on the river or canal when conditions permitted, no machines there either.

Also: en.m.wikipedia.org/wiki/Ice_resurfacer