We did one overnight at Savanna Portage State Park with my young children. The sites were smaller than we had hoped and we ended up moving to a new site, which they typically use for a group site and was much better to allow us to spread out and they even allowed us to park two vehicles up there. We enjoyed renting canoes for a bit in the afternoon and borrowed a kids activity kit. The bugs were pretty intense, a lot of mosquitoes, flies, and several wood ticks, so we recommend a screen tent for eating.