The Pub is simplifying Happy Hour. Instead of the current system of Buy 1 Get 1 on selected bottled beers, spirits, wine, shots & cocktails etc…
酒吧将会把欢乐时光的规则简单化,而不再是原来一成不变的买一送一:买啤酒送啤酒,买烈酒送烈酒,买葡萄酒送葡萄酒,买一口酒送一口酒 & 买鸡尾酒送鸡尾酒…

It will change simply to half price! This means you don’t need to remember are you on the buy 1 or get 1, it allows you to change your drink at any point and that you can drink your fill without having to do that extra 1 you didn’t want.
它将会直接收取半价!这意味着您再也不需要谨记您当前喝的那杯是第一杯还是那个送的第二杯,也意味着您喝完一杯后不想再喝的时候也不用担心会浪费掉。

In all, it keeps the whole system simple for everyone.
总之,这样使得整个系统简单方便,对每个人也很实用。