If you want your favorite coffee shop to survive, don't be that person. Or if you must sit there and work all day, buy food or drinks more often. Remember: You aren't entitled to free Wi-Fi, you adorable tea-drinking freeloader, you!
Definitely don't ask for coffee you can only find at that one giant coffee chain
Instead of ordering a triple-shot, extra-whip, half-caf Caramel Frappuccino from a coffee shop that does not have a green lady mascot in it, try talking to the barista and telling them you want a cold and sweet java. They might surprise you with a similar drink you've never had and might like, such as a cold brew with house-made vanilla syrup!
And keep in mind that coffee is often different at Starbucks than it is at a third-wave shop -- even if it has the same name. A popular Starbucks macchiato comes in a Big Gulp-sized cup. But any shop serious about coffee will serve that same drink in a 7.5oz glass with a mark of milk. It's not your fault for being confused, Starbucks just has its own language.