The official answer assumes the general public are clueless. Great way to talk down to people. I'm sure you're a real joy to converse with.
Rather than ask John "I'm Guessing" Public, you could ask the actual business and get the correct response. https://sites.google.com/prod/view/snowplay-facebook-faq/ticket-pricing-equipment-rentals/can-i-bring-my-own-sleds-and-innertubes?
I dont think so, they wont let you down their bigger slopes. Their bigger slopes require the person and tube to be latched on to their equipment to haul up the hill.
Yes you can but it not really usefull or needed their tubes which are included in price for tickets
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