To be honest, it's your choice, however... I was stuck in your spot last year, but I found out the prom and grad ceremony were on the same day... So I decided to go...
I provided myself a car that I borrowed from my brother's lexus to enjoy the day... Who needs a limo?
And you can wear the same suit as you wore to Artona... But it didn't turn out good as I expected... Food was meh and the theme was boring as hell. But the best thing of the day was probably the after party when somebody provided us drink...
But yeah, i didn't hang out as much after the prom, everybody were too busy for work or school...