I've been there a lot. I'm only about 45 minutes or so from Delgrosso (I also live/die for their pizza and spaghetti sauces!!). It definitely is a small park and geared more towards younger kids, but there are a couple of bigger rides for older kids - but not much. It makes for a really nice and relaxing day. They also offer coupons on their sauces, which are out now (have been collecting them. lol). You can get a pass to just go in, to ride the rides or to ride the rides and the water park. It's a very nice park.
For those in PA that aren't sure where it's at, it's just outside of Altoona, PA in Cambria County. I'm in Indiana County, but lived in Cambria county for several years.
They also do spaghetti days there, classic car shows, and a few music concerts. It's nice.