Roughly, 10 sq. ft. per person is comfortable. Additional space for tables, stage area, and aisles should be included. See the following charts for more details. An example using the above would be an event where 80 people are expected and a “10’ X 20’stage” in the front will be used for entertainment. The 1000 sq ft. space could be met with a 30x30 or a 20x50 pole tent.