I work a few hours a week at a drive-thru espresso stand, so I think I can offer an informed opinion—a refreshing change of pace around here, I know. Anyway, either use Starbucks lingo, or know how many ounces you want. 8, 12, 16, 20, and 32 oz drinks is a pretty common range. You say “large” and I have to then guess or play 20 Questions.
Also, if you get a blended drink, it’s just plain rude not to tip. Those things are a pain to make.
via Pete
Not So Fast 