Frederick, I hope you have as good an experience with them as I did if you ever need them. I read a complaint on another board about them not servicing your RV if you are not hooked up to the tow vehicle. Don't know if it is true or not.
I do know that the Good Sam's ERS also works as an automobile emergency road service even if you are just in your truck or car without your RV. It's nice knowing that if I ever had a flat tire or lock myself out I can call them.
Greg, be sure to check what the Wally Good Sam's membership includes. The regular Good Sam's membership does not include the emergency road service unless they've added something new that I don't know about.