My husband and I will be in Philly for the first time next weekend, attending a conference at the Hampton Inn Philadelphia Convention Center on Race Street. Immediately after the conference, we fly to Tanzania to begin our service with the Peace Corps! I am looking for suggestions for restaurants that are within reasonable walking distance from our hotel, cheap-ish and vegetarian friendly; we like most genres of food, especially hippie-vegetarian, Indian, Middle Eastern and Thai. Any ideas for our last few meals in the US?? Thank you!