Yes, most of the time this isn't a problem just be sure to get something durable and not to fill it up to far because the terrain is rough and slopped and I'd for it to pull you or fly free into someone else.
Yes you may, and have a great time
I've been there and people have an awning set up for shade. Everybody carries a bucket and has supplies, great idea for the wagon, they are very nice and I'll definitely be bringing my wagon next time! Have fun, hope you find lots of pretty crystals💫
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