Granted you are not writing software but after the first couple of weeks you should be able to start hacking/innovating new drinks and since you properly became a software developer because you like creating new things, this should give you some of the same feeling.
But an additional huge plus: unlike being a code geek, being a bartender is not a low status job and there is going to be a lot of females around - combine the two and you should have a relative easy time getting laid (and plenty of chances to practice).