Get a vodka and coke; it's the most manly drink that isn't beer, lager, cider, shots etc.
Tbh i know where you're coming from OP; i used to love beer (most types anyway) then i went on holiday and managed to hate it; i literally felt sick everytime i drank it but kept on trying as i knew i liked it. I'm hoping i like it again in time for uni though. In your case i wouldn't have any problems with someone who doesn't drink or find it unusual, plenty of people don't drink. I would try the vodka and coke though cause it doesn't taste much like beer and is alcoholic and manly. And don't order a lemonade whatever you do past 9pm.