I need to feed a group of 40-50 (mostly high school students, some adults) during the lunch hour on a Thursday in February. We need to be w/in (short) walking distance of 20th and Harrison. We're probably doing Vietnamese that night, so it would be nice if we could do deli, Indian, taqueria, or anything else non-Asian for lunch. My priorities are tasty, cheap, and quick. Suggestions?