Hello Monica - I was in Palermo a few weeks ago with a friend and our travel style for this trip (3 n Palermo, 3 n Ragusa, 3 n Ortigia) was to relax, explore, eat, and drink. So not heavy on learning about history, architecture, etc. More admiring the sights we were seeing. With that said, we took Domenico's tour and were joined by literally a United Nations group of travelers. Since we had a free day before the tour - we already had walked thru Quattro Canti, the Fountain of Shame, Balaro Market and back streets (roughly following RS walking tour). Our first day was a national holiday so he wasn't available until the next day. So for us, it felt like a bit of a repeat but with food tastes (arancini, chick pea fritters, juice, gelato etc). We were glad we took market photos the day before because we walked pretty quickly thru the market, but did sit for a bit to try some foods. I would say we didn't get off the main touristy area and one of the churches we were supposed to visit had a long entrance line, so that was skipped. We might have enjoyed it more if it happened on our first day. With that said, he is very personable and has a great sense of humor ! I would suggest you skip the tour and use the RS tour as a rough guide. It felt completely safe to explore and even walk back to our Air BnB off the north end of the main shopping street (via Maqueda) in a small alley at 10P. We did enjoy the 1/2 hour Teatro Massimo tour though and would recommend that. Also, would recommend eating at Grano Granis (small, family run, near Teatro Massimo) - I had the pesto di pistachio with clams. Yum.