Meh, prom is nothing special. I wouldn't make a big deal out of it. Go if you feel like it but if you don't go you won't regret it.
I had a date while most of my buddies didn't and that didn't stop us from having a blast. Besides, after the official stuff and our grad class meeting up at the beach, my date went off with her friends somewhere and I went off with my buddies to our old hangout (what used to be called Green Hut) and reminisced until morning haha. Good times.