Excellent list! I'd also recommend adding "What is this?" to the list, and for extra credit, do some research on the vernacular / polite way to address stranger

Excellent list! I'd also recommend adding "What is this?" to the list, and for extra credit, do some research on the vernacular / polite way to address strangers in public ("Excuse me" also works for this in a pinch, although not in all cultures!).