The only play ground in the camping areas are pretty basic (swing & slide). If I remember correctly there is a more elaborate playground in the day use area but isn't close by any camping sites. I don't know that there are any particularly bad sites in Hernando Point, some just offer different attractions than others. Some are water front, some near the bathrooms, some offer more shade than others, etc. My suggestion is to either drive out and have a look around or make you first trip when its not packed so you can have multiple sites to choose from.
