When you're coming through El Paso on I-10, take the "Downtown" exit. ?Take any of the streets heading south (Stanton, Mesa, etc) and you will come to a multitude of parking areas where you can park and walk across the border. ?Benito Juarez Ave is just across the bridge, and there are Farmacias everywhere.
DO NOT take US 54 West (The Juarez exit at the freeway interchange) or you will find yourself driving into Mexico. ?Not a big deal for us locals, but the driving etiquette is a bit different down there, and if you don't know where you're going, you can get lost pretty easily.
You also need Mexico insurance if you drive. ?Your American insurance isn't any good down there....I don't care what your agent told you. ?I'm a manager for a rental car company here, and I deal with this on a daily basis. ?If you have an accident in Mexico, you are liable immediately to pay the damages to the other driver, and the American driver is ALWAYS at fault. ?If you don't have Mexico insurance, you go to jail and your vehicle will be impounded. ?If you do have Mexico insurance, you call the adjuster, fill out some forms, and be on your way. ?
If you aren't familiar with driving there, best to walk over until you get familiar with it. ?Everything you're looking for is within about a ?block radius of the border. ?If you're feeling adventurous, take a Juarez cab and go to lunch or dinner at Barrigas (the one by the bull ring)....the food is excellent, the wait staff very attentive, and the prices are reasonable. ?Barrigas has expanded into El Paso with 2 locations as well, if you aren't feeling adventurous.