Philipsburg's main drag is Front Street, and this is where you'll find most of the jewelry stores, electronics boutiques, parfumeries, and other shops that take advantage of the city's status as a duty-free port. When cruise ships are in port, the narrow streets can become quite crowded, but you'll rarely have to jostle for attention from the dozens of jewelers selling high-end watches and gold and diamond jewelry.
Towards the east end of Front Street (closest to the cruise pier, connected to downtown by a walkway) are a pair of casinos, the Rouge et Noir and the Coliseum Casino. Back Street, parallel to Front Street on the Salt Pond side of town, is a bit less touristy and where more locals tend to congregate.