Old Navy in the King of Prussia mall. It's very welcoming. There's always lots to do, whether educational or just fun. Barnaby's in Chadds Ford or Nifty Fifty's on MacDade Boulevard. To play a sport, read a book in the parks.
College is a big melting pot.
You should divide your time equally between the two. The Gallery on Market Street. There's an Express there. There's a lot to do, but you have to go look for it. You'll never be bored unless you want to be.