Hello! We did this and enjoyed it very much. The trick is, do it first, before you get to the main visitors center.(which is a few miles down the road) Most people do it afterwards, and it's more crowded then. You can buy your tickets there for the visitors center, if you don't already have them. My boys were 15 and 11 when we went and they really enjoyed the hands-on activities there. Since there weren't many people there, they got to do everything several times. It won't take up too much of your day, so I'd say do it.