I was not thinking of time for travel to San Antonio?? you are correct about that.
I have traveled for work and pleasure in Mexico for over 35 years, I remember when it was very safe along the boarder towns, not true anymore. I was threatened even in Monterrey in front of the hotel. And in Nogalas.
I to travel dressed very plain and show no shiny Jewelry, watches or anything they may want to take from me.