What Size Dance Floor Do You Need?
The rule of thumb: plan roughly 4.5 square feet of dance floor per dancing guest, and assume about a third to a half of your guest list is on the floor at peak. A 100-guest wedding is usually happy on a 15x15 or 16x16 floor; 150 guests on an 18x18; 200-plus guests on a 20x20 or larger.
Bigger is not automatically better. An oversized floor reads empty in photos and kills the energy early. We size the floor to the crowd you actually expect on it, then place it where the bar, the band and the head table all funnel toward it.

