I stayed at Islet the second week of August. It was busy, but not full. Decent restrooms, nice host, easy to get around with lots of nice walking areas. The islet is fun to explore. Mosquitos weren’t as bad as I expected during the day, but evening and morning they were pretty bad. I wasn’t able to reserve one of the sites near the water, but I was pretty close to the swim beach which was nice for walking over with my SUP. Which, by the way, this is some of the best paddling I’ve ever experienced. In the morning, when the water is calm, the lake is so clear you can see everything on the bottom. The lake being so shallow, and warm (in the afternoon when the sun heats up the water),
makes it popular for families with young children. This is my main complaint, I didn’t mind the families so much as all the stuff (floats, blankets, etc) being left behind on the beach and in the water for days on end. Still very memorable to be able to camp and swim in this beautiful lake.