Went here with my four kids (ages 7,5,4,3). They had a blast. I actually enjoyed this site more than Montezuma's castle. Be sure to hike down to where the well drains out and where it enters the canal.
It's a nice park. Nothing to write home about but it's a decent park.
The food is pretty good. Service is great. I don't think I'd eat here again because there are so many other places to explore and eat at, but I'd recommend it.
If you don't have a high clearance vehicle be prepared to hike 4-5 miles round trip. We took our four kids (7, 5, 4 & 2 years old). The 7 and 5 year old loved and it enjoyed the hike all the way to the top. The 4 & 2 year old also enjoyed it but needed a lot of assistance-I ended up carrying them on my shoulders for half the trip. The view is amazing and well worth the trip. The bridge is not for the faint of heart.