Homecoming is the stupidest dance in High School. Trust a guy who's gone through all of high school. Just wait for prom and go with a nice girl. Play RS over homecoming but not prom.
If you have friends going to homecoming, or a girl to go with, go there. If you think it will be boring, stick with playing runescape, and enjoy your weekend.
I'll case the place before the dance, and set up laptop under tables and in the bathroom so you can disappear for a few minutes and play through out the night. Get some game time and go to the dance.