We prefer site reservations. We like just because we are "planners", and figure out everything in advance. Also, when we return to campgrounds, we usually have preferred campsites.
I think I kinda sorta disagree with skipnchar, I think site reservations are "more fair" as I don't have the time and availability to "campout" at a front office to wait for the doors to open to get a site. By reserving, all sites are available to everyone. To avoid people "hogging" sites, our local state park has time limits on sites, you can only stay on a campsite for 2 weeks at a time, then you have to move to a different site.
skipnchar:
"That's the opinion of one who uses campgrounds as a TRAVEL stop over and if I lived locally I may have a different opinion (or a better alarm clock ) "
-- yep, I'm one o' them locals!
The only campground we've ever been to that doesn't do site specific reservations is Fort Wilderness in Disney World - but I am not sure if there is a bad site there!
