I must agree with PC767, Landing Drinks are not commonplace anymore. I have been flying for 6 years with 3 different airlines (therefore hundreds of sectors and colleagues) and I have never, ever, heard of, or experienced anyone having Landing Drinks in that time. It's a thing of the past.
It is not commonplace by any means, so please don't lead others, who may not have first hand knowledge of the industry, to think it is.