You dont have to pay to fill the tubes, but yes there is a line, I suggest to go early or fill it up with your inflable mattress pump if your are camping! Great place!!
Air station is free
The lines at filling stations depend on the day and time you are there. We usually camp, so we use our own pump.
Its great and I would fill it before u get there. I think they would fill for u. And there is definitely lines. Have a great time. We did.
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