Play a variety of genres of music. What appeals to your friends might not appeal to your current office mates. Mix things up and play some of each genre so the people who would go for ballroom dancing will have time to rest when hippy and techno music plays.
Be aware of your audience preference. You will not invite some stranger in your wedding so it is a lot easier to know their music preference. You might want to consider their ages too and the popular songs during their time. You can also make the initiative of asking your audience their favorite songs.
