Variety of coffee drinks served during "cocktail hour" in addition to lemonade, iced tea, etc. instread of liquor so that guests will be wide awake instead of ready for a nap after dinner. Champaign or sparkling wine during dinner with an open bar.
Do you know what a doppio is? I personally haven't seen this on a menu at any nearby coffee shops here in southern California but that doesn't mean it doesn't sound good. I would love an espresso topped off with MORE espresso! Who knew it had such a silly-sounding but somehow awesome name?