I also enjoy state parks with a more pristine, primitive feel than the average commercial RV park. But it depends on what kind of vacation you want.
Last month we stayed at the Jellystone park near Mammoth Cave, and had the BEST time. It was really clean, everyone was friendly. The pool was nice. The kids enjoyed the water slide. There was a nice area in the office/shop/lounge to have a snack, play board games, watch cartoons, which would be so nice on a rainy day.
The only potential problem I could see was that they rented golf carts and so the carts were zipping around the roads all day and most of the night with drivers who treated them like ATV's, therefore little kids would need to be watched carefully. Of course . . . ahem, I might have been one of the guilty parties. I was careful I swear!
Ol' MacDonalds Resort in Alberta. Very kid oriented. Beach, lots of small playgrounds (so there is always one close by), strict traffic rules (for the kid's safety), Mini train rides, Folk singers sometimes - even a small arcade and mini-golf for rainy days(for a fee). Popular place, so book early.
It is a short trip to Stettler, where we took a ride on an antique train - about 6hrs round trip.
Well, it's a State Park versus a private campground, but if you are ever traveling on I-80 in Nebraska, smack dab in between Lincoln and Omaha you will find Mahoney State Park.
Mahoney has a lodge w/restaurant, fishing lake, water park with slides and wave pool, horse back riding, pony rides, large indoor play area, putt putt golf, hiking, craft center, dinner theater, acres and acres of park land, etc. During the winter there is an ice rink and sledding also. Great place for families.
Right next door to Mahoney is the Strategic Air Command museum. Very interesting for any military air buff.
WOW! I am so wanting to hit Mahoney State Park!
we prefer state and national type campgounds - the only 'resort' type camping we did was at Lakeside at Myrtle Beach. Lakeside was great, but that was the type of camping we were looking for at the time (it's not us for all the time). We even have fam in NE, so we have an excuse !!!
When we want to stay at a park other than a SP/NP or NF we usually go to a KOA, our kids really like just having a pool to play in since that is something we don't have at home. Our local KOA is a great weekend or birthday party spot since it has all the Kamping extras they offer - pool, hot tub, bouce pillow, arcade, playground - we stay there once or twice a year just for the kids. Its more pricey but around here they are usually the only resort choice when you have kids.