PSN Back Up, What are you going to do?

Today is Sunday and a day that gamers normally put in hours into gaming, which reach double figures. If PS3 users in the UK have to wait until late tonight for the PSN to be Back up, or even tomorrow morning, what will happen come Monday? You can bet some people will stay up all night if the PSN is back late, and these same people may not go into work or school in the morning.