You don't need an appointment but I highly recommend you do get an appointment or submit your paper work online so that you get bumped ahead of the line. If you don't you'll be waiting in the sun for hours.
You need an appointment. I was there last week and they were turning people away without appointments. I was early for my appointment but at 6 ft apart and only a few going in at a time expect to wait a long time
Yes, take water, beach chair and a umbrella without fail
Yes you can. They're open to the public. You just can't make any appointments. So either get there early early or 4pm.
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