What will happen is people will get very pissed for a while, the first few weeks of 24 hour drink availability. Then people will calm down a bit and realise 'hey we don't have to neck pints like we did before. We can take our time, drink at our own pace, without having to race to get more and more drinks in as last orders approach'. I currently live in a country where there is no time limit on drinking and it is a great pleasure to go out at night. There is hardly any violence or brawling in and around pubs and because there is not one time when drinkers are turfed out onto the streets together. The drunks that there are stagger home in small groups, causing no one any trouble. 24 hour drinking is a very good idea, and I'm confident that you ambulance drivers will have less drink related calls once its in place. As for the point of planning more ambulances available for drinking times, this will have to change I suspect: because there will be no sudden surge of fighting / injuries in the late hours of the evening.