I'm planning to be in Philly next weekend with my fiance. We're planning to spend a day sightseeing, but I personally can only handle so many museums, zoos and Liberty Bells. Looking for recommendations of interesting foods in interesting neighborhoods that we can pick up and eat on the go. As in, the best Philly Cheese Steak EVER, which we can split and then move on to a taco at the greatest Tacqueria there ever was, etc. etc. I don't have an abyss of a stomach (unfortunately) so everything has to be just a taste of whatever food item we're picking up. I'll eat just about anything except raw onions.