I certainly wouldn't let a language barrier stop us from visiting any part of the world. Keep a phrase book and dictionary with you and you'll manage fine. Spanish is not difficult to learn and is the most studied language in the world so resources for learning it are widely available. Spanish is now the second most spoken language in the world with mandarin being first and english now third. I learned spanish as an adult with little difficulty and a lot of perseverance. When you travel in Mexico you are in the perfect environment to learn the language. Every sign, every supermarket, Television, news. The first month is a little intimidating but thinks fall into place pretty quick after that. Make it a goal, part of the trip, have fun with it. Great language, great country.