Technically yes because you're in a public area. But ive seen people without. So it really depends on who's there. Especially kids
Is the gate open to drive through to the start of the hike?
No, it is required. I heard claim it used to not be, but that is no longer the case. It is considered a family friendly area. Search for "jingle balls"
I think I've heard of people getting ticketed before, last time I was there i saw a few birthday suites though.
I guess if people around you don't mind you.
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