The solution is indeed right there. State Parks are designed for those that can carry water, keep their sewage, and run a fan instead of an air conditioner. Most state park campers like the peace and quiet, and learn to economize because they are enjoying the best places for tourism in their area. The government long ago made these places special, and it's up to the users that frequent them to keep them that way.
Don't run your generators unless you really need them, know your batteries needs, and only run generators to recharge, not for a/c. Take the time to walk the park and see how others treat it, then act like one of the best customers, not the worst.
If this doesn't sit well, and sometimes there are real reasons why, just take your rig to the RV Park, plug in, get what you paid for, relax and enjoy the time away.