Whether you like it or not, you and your groom are responsible for getting people out on the dance floor. Well, at least partly. You can have a great band or DJ, but your guests want to see you out there having fun.
I am not saying that you have to physically drag everyone and force them to dance. We have seen when planners guide their couple to the dance floor, the guests start to dance. When they see you having a great time and dancing, they want to come out on the dance floor too.
One more bonus: Your photographer and videographer can capture some great memories because everyone is out there dancing and having a great time!