Despite being tourists visiting Philly, don't waste your time down on 9th and Passyunk (Pat's and/or Geno's). I've lived in Philly my entire life and only go down there if it's 3am and I'm leaving a bar. If you want an amazing cheesesteak at about half the price ($4 compared to the outrageous new price of $7.95 at Pat's - I was shocked when I was there on Saturday night!) go to Delessandro's in Roxborough. It'll take a little longer to get to, but it's worth it. Simply amazing food.