We find the Mexican people to be most accommodating if you at least try to use a little Mexican Spanish. The phrases I learned in high school Spanish are of no use in Mexico. The Mexicans are an intelligent people and with a few words and some "Charades" you can get your message across. In the campgrounds, you will find that almost all the campers are from the USA or Canada and are always willing to help you out.
I took sick in Punta Perula on our first venture into Mexico. The campground host found a local woman who became our translator, guide, and friend. She got us to the hospital 35 miles away and facilitated everything.
Paul