Regardless of your reasons for going to Juarez, please use some common sense during your stay.
1. Don't wear your most expensive duds and jewels. This is a poor community, and if they smell money - they won't leave you alone!
2. Be aware of your surroundings.
3. Carry smaller bills. We all only had US $20 bills, and it's hard to bargain if they KNOW you have enough! Also, it's common to hear 'no change' when you try to get your change from your purchase.
Especially in the downtown area, "El Centro", driving is really dangerous here. For the most part people don't obey the traffic laws and pedestrians run out in front of traffic constantly.