I want to go, however I am only part-time so work until 2pm.
The night out starts at 7.
I live around 24 miles away from work. So I don't want to drive home and drive back, or wait around for 5 hours.
I asked my manager if it was possible to work a later shift. When she said was - I'll see what I can do, but if I can't then you're not coming? 
Explained the situation and she was just 
Aibu to not want to drive approximately 100 miles in one day?