Drinks in dreams intends to symbolize a long night of frenetic partying. This can be further interpreted as the party being dependent on the fleeting momentary state our body is at. Basically, we don’t know what to focus on and hence, it becomes harder for us to decide what memories we should take away with us when we wake up.
For some people, the mention of alcohol automatically invokes all sorts of feelings, both positive and negative. For a dreaming mind, drinks can mean different things ranging from relaxation to a sign to letting go of restrictions.