Dream Theater at Wedding

I hate to sound like that kind of progressive metal fan... but... I just simply can't play as much Dream Theater at the wedding celebration as I would like, as most (40/41) would just not have had the exposure to really dig deep into the complexities of the band's music. I fear they would not enjoy it, whereas I would be lost in my own world, my body moving in joyful rhythm to the music. One song has definitely made it to the list though - The Dance of Eternity.