Other than that, it's a great jumping off point for many local attractions. There are 4 other provincial 'parks' or nature reserves with trails to explore along the Bruce Trail nearby. Get a trail guide before you go if you can because we found it tough to get accurate information, but there is a sign about the trails in the park, if you can find it.
It's also close to Wasaga Beach where you can access many park entrances to get to the huge beautiful beach there. That way you don't have to swim near downtown where most people are. Take time to visit the historical Nancy Island in downtown Wasaga as well. It's a very interesting part of the war of 1812 and the guides were very helpful as well. Reenactments happen sometimes there as well (maybe mid August?)
Back around Craigleith, we took in a local cave/tree-top/zip line tour that was interesting through the 'Scenic Caves Eco-Tour', and spent some time in Owen Sound at Summerfolk Fest. Both were excellent!
Overall the park is not great, with gravel ground cover, little privacy, few trees and a nearby highway, but it's a good spot to call home base for many other local treats.