I fished it a bit as a kid...must've been all of 10 years old at the most at the time. the camping/rving close to shore will be a crap shoot for ya. The campground is provincial if I recall correctly, so best get up there real early if you want a spot at all, let alone one near the water...you might even check to see if reservations are possible...I recall some years it was tough to get a spot in there...
As for fishing, average sized fish, with the odd larger one mixed in. I used to take the boat to the far side of the lake near the long stretch of beach there. There is a deeper section along the west side of the lake, and a shallower almost shoal like stretch of lake on the east side. There were extensive weed beds along that east side and I recall doing quite well there on the fly.
It's a nice little lake, and a great place to take the kids...might even get a lunker or two. I think the record fish for that lake was double digits...keep in mind though that was like in the 1920's or something...

Now mostly what you'll find are cookie cutters in the 10-12 inch range...
Remember...really busy up there on long weekends, have some other options in mind if you find you can't find a spot to camp...There are a lot of lakes in the area...some accessible with your RV...
hope that helps,
rib