Just chiming in on the Tobacco Valley RDV in Eureka.
I used to go over to that every year. I really enjoyed it. In its early days it was quite tied in to the town celebration. Good fun walking in the parade, olde west type shootouts, a great bunch of guys used to come down from Canada for the weekend, Saturday morning all you can hog pancake feed, beard contest, etc. After a few years, the RDV itself moved out of town into its own site and became more RDV like and less involved with the town. Regardless of the format, it was always a good outing. The shooting competition got better and better over the years to the point where you really had to put on your A game to win.
I am sorry to say it has probably been 20 yers since I have been to it, but in my mind it remains a great event.