Have never stayed at the camp but have heard good things about it.
I am very familiar with the area. Having a smaller boat we always launched at Hartley bay and accessed the Bad/French/Pickeral river delta area via the Bad river.
We went this route as at least as far as I'm concerned it's much safer than heading down the Key River and across the open waters of Georgian Bay. (At least in a small boat).
It's a fantastic fishery with tophy fish of all species.
If you're after larger walleye that time of year we always did well with 2 basic techniques.
During the day we'd fish likely spots with a small slip sinker (Lindy), a long light 4lb test tippet, single hook and an air injected crawler. We regularly put a beating on fish up there using this very simple technique.
Second technique was trolling large floating rapalas at night in likely areas (neckdowns, current areas).
Troll super slow and doctor the eye of the rap by bending it down a bit. This gives the lure a much more erratic side to side wobble that is deadly when trolled slowly.
We never really targeted bass up there, pretty much just walleye and musky. Bass are everywhere though and easy to catch.
The Bustard islands were known as a top producer.