What can I drink safely When takin 5 mg diazepam ?

My anxiety has been really bad lately So the doctor gave me some diazepam to help Calm me abit , girls want a Xmas night out next week End an I really want to go as haven t been out of the house much this past week or more An think it would do me gd BUT cause of my anxiety I am not sure if I will be able to go , especially if I don t take my tabs , but if I take my tabs then I can t drink alcohol ? So what could I drink to kind of hyp me abit but with out bein drunk but to have a Gd time if u get me , the tabs kind of make me feel gd , I had a weeks supply of 2 mg An now I have another eeeks supply of 5 mg but that is 3 a day , so 15 mg in all per day now