They're not aikido vices at all, they're yours, or at least they are the individuals. I don't care what you do, as long as you don't smoke in the dojo, or come onto the mat drunk.
I heard an instructor in Japan asked many years ago why he did aikido, the answer "because it makes the beer taste better". Personally I never drink alcohol before training, but I have to agree with that instructor, beer doesn't taste anywhere near as good as it does when I drink one after a good hard keiko session. After practice in Japan the class often retired to a local izakaya for a few "nama dai" glasses of ice cold beer, especially in the summer.
I can't even say don't drink on the mat, as I have had the pleasure of drinking beer on the mat at Hombu dojo