The park arrests seem to be especially common in places like Polk County or Martin County, Florida. In Polk, it's almost like a regular sweep of the parks, then the cruisers come back, then the sweep comes back, again and again.
I don't know what it is about the state. I remember visiting Orlando twice in the '90s. Both times every rest stop on I-4 between Orlando and Tampa seemed to have cruising glances, although we had places to go and
Parliament House with sufficient diversion at night.