My folks became "snowbirds" in 1984. They settled in a "RV" park outside of Zephyer Hills Fla. during the winter months. My kids were little, we would visit on holidays. To say the place was kid "friendly" would be a stretch. Kid tolerant may be a better description.
Kids were not allowed at or near the shuffle board courts, and were discouraged from being around the horseshoe pits.
The pool had hours of activities that were geared to the seniors, they would do their water "exercises" (stand around in the shallow end with empty one gallon milk jugs and push them under the water repeatedly
) , kids were expected to stay away.
The pool closed early, kids were always bummed. If the kids rode their bikes too fast, someone would complian.
Just depends on which type of park you go to, I guess. If you land in one geared towards retired seniors, there could be restrictions.
Just my experience.