Besides restaurants the Reading Terminal Market also has a myriad of small stands where you can purchase fresh food items to take home and put together your own gourmet meal. I recommend bringing a cooler,with ice and a large, sturdy shopping bag.
Get a map when you first walk in and if you're with a group, pick a common meeting spot (a good place is the big stone pig, Philbert, near center.
For fresh produce you have choices among Asian,Italian, Pennsylvania Dutch and several organic stands.Each one has a little something different to offer.
For bread that tastes as good as that in New York, try Le Bus or Metropolitan Bakery...a little pricey but worth it. Don't leave without stopping at Termini's Italian Bakery stand (row 3) for some Sicilian cookies or fresh cannolis.
If you are interested in seafood,the selection is UNBELIEVABLE. I found prawns the size of small lobsters for a very reasonable price. Vendors are more than happy to answer questions and though I've tried many it seems to me the Asian seafood guys have the freshest fish.
Old City Coffee carries not only every conceivable flavor of coffee but an unbelievable selection of teas as well. If you're thirsty for something else there's Four Season's Juice Bar for fresh blended drinks and smoothies,and even a Beer Garden serving domestic and imported beers,wines and spirits.
There are several Amish stands clustered next to each other for fresh eggs, turkey products,REAL original hot pretzels- made on site. Then there's Glick's Salads for pickled chow-chow,apple butter and honey. Keep moving and you'll find several Pennsylvania Dutch butchers (with pork,veal,prime beef,sausage,lamb) and poultry vendors,(with home-raised duck,geese,turkey and game birds). Pick up some fresh Lebanon Bologna at any of the Amish butchers, take it home,spread it with Philly cream cheese and slice into rounds. Heaven! Move along and you'll find farm fresh dairy products(with ice cream, fresh-churned butter and local cheeses).
An interesting day stand is My Kid's Dairy where fresh goat's milk cheese and goat's milk fudge are sold... This is just a small sampling of the many quality items sold at Reading Terminal Market. You will have to come and see yourself the best that Philadelphia has to offer!