My experience with Good Sam has been acceptable. By far better than my experience with AAA, which is why we left AAA years ago. I called for GS roadside service when my jacks would not retract on a county fairground. A dirt lot, private property, not a roadway. There was no hesitation about finding a "truck" repair service capable of correcting a hydraulic problem.
Now if you're on a "jeep" or donkey trail you might have a concern. Also many beaches have posting that roadside service will not assist you beyond "this point", but there are usually a few college kids with 4 wheel drives wishing to earn a few extra bucks. (a search of YouTube will give examples.)
Anyway, I've been satisfied with GS, if you search you will find many who have not. Usually because the contracted service facility screwed up.
JMHO