The Happy Barista

• Write your coffee order on your cup, or use a post-it note.
• Make sure your cup is clean, although most cafes won't mind giving it a rinse, too many, too often can slow down orders and impact service for other customers.
• Bring a cup with a lid unless you've asked your barista if no lid is an ok lid!
• If they discount your coffee because you UYOC then maybe tip them if you're feeling generous.

For more handy hints, why not have a look at Bitter Barista? There is, of course, the expected appearance of words that contain both letters and stars****.