Type of drink to order at a bar I'm not familiar with the bar scene - I have been drinking mostly at home so that I don't have to worry about driving afterwards. However, recently I found a nice bar in the area I moved to and would like to try going out once in a while. What type of drink should I order if I want to hangout at the bar for one hour after 11 pm? I see many folks getting cocktails like such as margaritas and martinis, but is it against the norm to order beer, wine, or shots? 

I do not plan to have dinner. The bar is mellow and catered to young adults - the clientele is older than freshman college students.
Order what you like.  Drink what you like.  Life is too short to drink what someone else wants or expects you to.  If people care what you're drinking at this bar, then I question why you'd want to be there.