The Swiss gladly fight off Americanization of their culture and cuisine. Groceries are Swiss or French-based with little goods common to America. Stores do not carry bags, so bring your own. Border guards, however, are notorious for stopping upon reentry to make sure you have not exceeded your allowable purchases. Expect major cheese counters, decent produce and meats, and boxed milk.
Shipping is advised, particularly for ultra-American goods.
However, US Embassy personnel qualify for entry to American military installations in Germany and Italy. Yes, mostly through the filipino immigrant community. Filipinos are well represented among US Mission FSN's and are a good source for contacts. Local economy wages are unknown. Yes, very prevalent.