Try to find out what kind of music will be played. My guess is that while there may be a waltz or fox trot (perhaps as a slow sway dance), most of the music may well be rock and roll, and that swing, disco/hustle and salsa music might be played a fair amount.
Also important is your likely partners, what steps each knows and the level of skill, especially leading. (If a woman will both provide a minimum of tension in a dance hold and move in response to my usually strong lead, I can make a noice look good to most (unsophisticated about dancing skill) onlookers and, even more important, make the experience on the dance floor one of pleasure and satisfaction.
Whatever, I would focus on a limited number of steps of what I call key steps, e.g., the box (used in the waltz, fox trot, and rumba), a disco/hustle kind forward and back step.