Q: We’re retirees from a town with few crimes. We'll attend the marriage of a favorite niece, and hear all the stories about San Francisco street violence and homeless camps. Some happen near the hotel where we’ll stay for three nights. We want to sightsee the city, but at advanced age and physical limits, is it too dangerous for us? PLM, Ft. Collins CO

A: See the famous sights in San Francisco, but do it safely. Ask a younger adult wedding attendee or couple to join you in a tour. Or if that isn’t possible, ask the hotel desk staff to recommend booking a local company that conducts guided tours around the city.