I can fit a 16 person tent on one of their smallest spots. Two 5 persons shouldn't be an issue.
Some of the sites are huge! However most campgrounds have a limit so they can keep guests slightly dispersed along with earn more money by renting more sites : ) Personally I do not know if this is their policy
Depends on the size of the tents, but probably. I put a 5 person and a 3 person without a problem.
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