With the greatest respect.......you are not a young nurse!
Yes they like to indulge in the alcohol, but they also like to show that they have been somewhere warm and sunny, by coming home with a tan..........and yes, I know you could say that they got it at the local tanning shop.....but even that won't wash - if you are well enough to go to the tanning booth, then you are well enough to show up for work.