I agree with Steve and Carol...best to call and check... they are definitely accommodating. We haven't been there in awhile (7-8 months) but I'm sure nothing's changed.
We stayed in a converted cargo van with no issues and no questions asked. You might consider calling them or go in and check.
You'll have to call and ask them at the office. They are pretty accommodating to campers, especially if you tell them you have a service dog and vehicle converted to one with sleeping quarters. My wife and I were there in September, and they were very friendly and helpful to us during our stay.
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