I'm a city guy here that's a tough predicament with the beers I dunno if you wanna risk going in with the alcohol I don't know what the best thing to do is but I'd probably not after the beers, in surprised though that your not on call 24 hours being on the extra board and all, guys on road extra board in my barn are on call all day all night maybe the beers wasn't a good idea? The Diad they could probably give ya a ten minute crash course on, not that hard and I'm sure if they called u in to run the city chances are they probably wouldn't come down on ya for any diad mistakes but the beers thing is the dilemma here IMO I dunno if you've been at the job a while and not super new I'd call your steward and tell him the situation