Buster52....The Elks produce three paper bound books breaking the country into three sections. The book describes what each Lodge offers. They describe, what power they have 50/30/20, if they have sewer and water and how many sites.
As "Janss" stated, some are just parking lots and some are pretty nice. For example....Seattle has NO RV parks within 45 minutes of downtown Seattle, yet the Seattle Elks, near the airport has about 8 sites. They are back in spots on asphalt, about 45' deep and 15' wide, full hookups.
We have traveled all over the western U.S. and have checked out several Elks Lodges. We don't go out of our way to stay there, unless it's like the Seattle Elks which put us downtown. If it's there and convenient we'll stay, but I like to know that there is a spot there when I arrive and that's not always going to happen. You can call within a couple of hours and ask if they have spots, but it's still first come, first served.
We've also stopped at a couple that shouldn't even list that they have RV sites.