What I read in a recent post made me want to say this. For a situation in which you are trying to encourage a person to try something new, like swing, having alcoholic beverage as a facilitator is not, really, a good idea. If you are not able to get into it completely sober, you should not get into it.
Now, after you do get into it and you are in the company of people who also are into it, getting buzzed or blasted is appropriate. And that's all I want to say on the subject.