I've had good service from AAA over the years for regular vehicle issues but never had an RV plan. I've heard so many RV horror stories about ALL roadside assistance companies recently that I no longer maintain an account as I'm usually in my RV when out of town.
I agree with the group that says carry some cash, as well as a credit card. I plan to call a local tow in the unlikely event I have an issue, and pay whatever they ask.
I'm not carrying thousands of dollars or anything, but a little bit might be helpful. What if there is no breakdown, but your 500 miles from home with 1/4 tank and the card machines are down state/nationwide or they don't take checks? Everyone should carry enough cash to get you home or >500 miles down the road in that situation. I can't imagine any police issues over a couple hundred dollars.