I still think Knotts would be good for us to try out for a non -Disney day. How busy does it get during the summer - do they have anything resembling fast passes (perhaps to buy separately)? I presume it would be quieter during the week than weekends - I wondered what would be the best day to visit in summer?
And BTW, what does 'campy' mean?
If you are going in the summer, go on a weekday. I would expect Tues, Wed, Th. would be your best bet. No, KBF doesn't offer any type of a Fast Pass option
Get there before they open so you can buy your tickets and be in line to get in when they open. Since their AP are pretty reasonable they do tend to get a lot of local teenagers there but we all know teenagers aren't much for getting up early!
"Campy" 2 a : something so outrageously artificial, affected, inappropriate, or out-of-date as to be considered amusing b : a style or mode of personal or creative expression that is absurdly exaggerated and often fuses elements of high and popular culture <a movie that celebrates camp>
So what I mean by campy is outdated or silly. Some of the entertainment at KBF is similar, in nature, to The Golden Horseshoe Revue at DLR or Hoop De Doo at WDW. Though not of the same caliber.
That's not to say you shouldn't see some of it. The Wild West Stunt show is pretty good and if you get there early enough you can sit in one of the Conestoga wagons sitting around the edge. They do a show in the Calico Saloon that is okay too. Basically a singer and piano player. It's a small venue so it's pretty intimate. You may see a gun fight by the saloon/train. The show for kids in Camp Snoopy is pretty bad. Okay for kids if they are really young.
Besides the coasters (and they have some great ones) don't overlook the older section (Ghost Town) Spend some time exploring it. Check out the graveyard (find the grave with the beating heart

). There's an old one room schoolhouse that was moved there. Visit the jail. Have one of the adults stop by the window near the entrance to the jail and you'll find a man sitting there with a microphone and a mirror. Tell him about your kids and the man in the jail cell will "talk" to them, using their names, etc. It's actually pretty cool and it took a few years for my DD to figure it out.
I previously mentioned the train-you will be robbed on it.

So be prepared, the robbers come from the back of the train. If you ride the stagecoach, I prefer sitting on the top. Better view, less crowded.
I just checked out KBF's website and it's been reworked lately. Check it out, it even offers touring plan ideas.
There is also an Indian show. I haven't seen that one in years. The Mystery Lodge located near the entrance to the Bigfoot Entrance is pretty good.