I'm going to prom later today. What should I do there?

Some context. I tend to keep to myself and I've never been to a school dance or prom before so I'm not sure what exactly I should do. Should I just ask girls I find pretty and nice if they want to dance? Should I just chill and wait for someone to show interest (assuming anyone does at all xD). Anyway I'd just love advice. Thanks for your time everyone!

I'm going to prom later today. What should I do there?
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