How much money you got ?
I work for the Department of Natural Resources, you can have 14 days on then you must take 16 days off and then you can stay again for another 14. But that's just at 1 Park. And most people stay longer by reserving sites in different names. Next year,most parks are doing away with the non reservable. Just a heads up. You will only be able to stay thru reservation system.
As many as you like as far as I know. Some lots require reservations, some do not. But I am unaware of any sort of limit.
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