hey, we have a keg of killian's that we originally tapped saturday after purchasing friday night, we overestimated how many people would be coming to our house on saturday morning for st patties day and still have about half the beer left. we bought a big bag of ice tonight, began re-icing it and what not. Will this keg regain most of its coldness? I am having a sample cup right now and i think it tastes alright but i'm not sure. any tips to advance the cool-down process? I'd prefer not to waste all this beer. thanks jd