Spent a weekend car camping at Rock lake in Algonquin park with my wife last fall and got to see a bull moose. The campsites were clean if a little close together but there were toilets even spaced around the campground and it was relatively quiet considering it was one of the more popular places. The lake was gorgeous and there was a lot to see nearby. Going in the fall is magical with the leaves changing colour and the wildlife getting ready for winter. It did get a little cold at night but we had enough blankets to keep us warm.
I'm always looking for people to talk about camping at the many campgrounds in Algonquin. I'm especially fond of camping in the backcountry there with all the choices for paddle in sites. In order to make it easier to find camping pals, I've put together a Discord server where campers in Ontario can share ideas, ask questions and swap stories about camping in the backcountry.
The Ontario Backcountry Camping Club welcomes campers of all backgrounds and experience to join and participate. It is free to join with the only requirement being to agree to the rules and be respectful of other members. If you like canoeing, hiking and camping in the backcountry or you're interested in learning about it I would encourage you to join.