I Love this park. We go several times every year, and the beauty of it strikes me every time.
The fishing is great, the wildlife is pretty good, and the lakes are relatively warm.
A couple of downsides: We like to canoe, but the motorboat traffic can be pretty bad, especially on long weekends in the summer. So if you are canoeing, stick to the northernmost lakes, where motorboats aren't allowed.
They have been making improvements to the park, building a visitor's centre, etc. and with improvements, comes popularity. We used to just show up with our trip plan, but now it's next to impossible to get a site, even when booking a few weeks in advance!
To those who have given bad reviews: This is a BACKCOUNTRY park, the facilities are exactly what is to be expected. At least there are facilities.
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