Marble Falls TX Area

Highly recommend Sunset Point. DON'T consider Riverview RV park in Marble Falls. And Inks would be good backup.
We stayed at Sunset Point back when it was an Air force camp. Please don't ask how long ago, but I still had a full head of hair and it was brown.
We have stayed at Inks many times. Would be my second choice.

Sunset Point is our favorite; Inks Lake if you prefer a state/COE park environment. I've seen more families at Inks and more retirees/couples at Sunset Point but your boys would enjoy either.

Sunset Point is one of the better parks in that area and is on the water. We have stayed there a few times and always had a good time.

Only one I know of is Sunset Point on Lake LBJ. Have never stayed there, but it gets good reviews.

Have you looked at Inks Lake State Park? It's right near Marble Falls, a lot of camp sites. It can get very busy on weekends, especially in summer.