I've heard such great things about KOA (Kampgrounds of America) from moms in various Facebook groups - it's the world's largest system of open-to-the-public campgrounds, with 525 KOA campgrounds throughout the US and Canada!
You do have to bring your own linens (towels, sheets, blankets, pillows) as well as toiletries and food. They did have toilet paper and some basic kitchen/cooking/grill supplies, and most of the basics can be bought at their General Store onsite, but we decided to head to the local Hannaford (5 minute drive) to get soap, food, booze, etc.
- outdoor pool (3.5-6' deep; no lifeguard; Memorial Day - Labor Day)
- jumping pillow (similar to a trampoline)
- mini golf
- arts & crafts
- giant chess / checkers
- Tent Site from about $35/night
- RV Site from about $48/night
- Cabin (no kitchen or bathroom, up to 6 people) from about $94/night
- Deluxe Cabin (with Full Shower, up to 8 people), from about $200/night