Tuolumne Meadows Campgrounds is closed for the season.

Collie, Peter Lougheed is great. Don't know about reservations -- we snagged a lakeside first come first served campsite in early September. We were almost the only ones in the whole campground.

And we camped without reservations throughout Banff and Jasper for most of September. But that was several years ago -- it is possible that things have gotten more crowded in Canada, just as they have in the US.

Maybe head on over to the Canada forum and see what the experts say. I'm just a tourist. ;)