I have drank the day after a shot... never had any problems, and that's a few rum n coke's and beer too. What I will do is, if I know I am going out for drinks etc. I will take the humira the day before or after a day or two...the day or 2 difference didnt matter, I didnt notice anything.
Also you may be tired getting a shot of humira, than drinking too that day. I sometimes get a lil drowzy,tired etc. on the day I take my Humira shot.