Want to know what those “kids” on MTV’s “The Real World” like to dance to when they’re not on camera? Those who attend the “Real World” Dance Party at 10 p.m. today at The Eldridge Hotel, 701 Mass., will find out. Syrus Yarbrough from the Boston cast and Randy Barry from the San Diego cast will team up for a night of unbridled grooves. Admission is $5 for this all-ages event.