I have mixed emotions!
I agree with Jon on the "In Season" and "Weekend" reservation requirement.
But, we never ever made reservations until last year.

We would arrive late at night and camp wherever there was a space (sometimes not even a designated site) as we are travellers and would be gone the next morning.
Last year we thought we would turn over a new leaf. Plan our route, schedule, reserve, arrive earlier, stay longer, etc.
Well that plan had its' upsides and downsides??
- It was way less stressful just in knowing you were going to have a place to stay at the end of the day without having to look for a campground in the dark.
- It did allow us to plan reasonable distances between reserved campgrounds.
- The above allowed us there to get to our site early enough to cook in the daylight, and enjoy the Campground amenities.
- Also by doing it online early, we could choose great sites, instead of being next to the dumpster.
On the downside:
- State parks rape you for reserving early with extra costs.
- Change in departure time forced us to drive too, far too late, a couple of times, just to make the campground we had a reservation at.
So this season we will take our chances Mon.-Thurs. and Pre & Post Season with no reservations.
Probably will only reserve if we plan to meet up with other TD campers, where it would be nice to have adjoining sites.
Good Roads
Brian & Sandi