ok mate your weekend is an alcohol binge, youll suffer a reduction in protein synthesis by as much as 50% as per some studies on the weekend plus some fat gain at the time, especially if you eat
at the end of the day you can still cut but the chances of you losing muscle are higher, and your fat loss will be slower.
all comes down on what your priorities are. if having your beers and maybe picking up a girl or 2 on the weekend is your thing, then its all good as far as im concerned
wouldnt drink that much if i were on any drugs that were hard on the liver though, ie oral roids, dnp, that sort of thing
i could write a more detailed response but...fuck man its a case of beer!!