Good Friday shows up our ambivalent attitude to alcohol
What will be uppermost in their minds is where they might "get in". Getting in, in this case, means getting into a pub, because the day that's in it represents about the last challenge to savour a pint in the smug knowledge that it is forbidden.
A certain amount of research will have been done in seeking out an oasis that will be susceptible to a knock on the side door, but the day is fraught with uncertainty.