I will be traveling from Tuscon. I want to go to Nogales, but my husbnd is against it. I am a 60 year old woman. Am fully capable of parking on the Arizona side and walking, and I can manage the pick pocket thing, so those not an issue. My concern is safety. Would you let your mother go to Nogales on her own? How safe is this? Also, have read that border crossings back into the U.S. are very long lines lately. Is this true of Nogales? An hour is ok, but more, I don't know. Are there times of the day when it is faster to return across border?