1. There’s more than one place to get the best smoked meat sandwich.
See that giant line of tourists outside of Schwartz’s? They’re queuing up for what they’ve been told is the best smoked meat sandwich in town. Now look across the street at Main’s. See how there’s no line?
2. Every greeting is choose-your-own-adventure.
You’re likely to be greeted with the salutation “Bonjour hi” wherever you go. The language you respond in will determine how that person addresses you — it’s all one to them, since pretty much everyone who works in any kind of service job is fluently bilingual. So if you’re a unilingual anglophone, don’t respond with “Bonjour”, or they’ll assume that’s your default preference and you’ll get an earful of French.