Helpful guides:

 
 
Tent Size Chart: Picnic/Graduation Formal Dinner Cathedral/theatre 10 sq. ft per person 15 sq. ft. per person stand up cocktail TENT SIZE: 10 X 10 10 12 X 12 14 15 X 15 22 15 16 X 16 25 17 42-52 20 X 20 40 28 60-70 20 X 30 60 40 94-110 20 X 40 80 53 130-160 20 X 60 120 80 180-210 30 X 30 90 60 150-180 30 X 40 120 80 160-190 30 X 45 135 90 225-250 30 X 50 150 100 230-255 30 X 60 180 120 300-325 30 X 90 270 180 40 X 40 160 106 280-315 40 X 60 240 160 400-425 40 X 80 320 213 525-575 40 X 100 400 266 650-700 50 X 60 300 200 500-550 50 X 80 400 160 650-700 50 X 100 500 333 700-775 60 X 70 420 280 700-800 60 X 100 600 400 1000-1100
 

How many guests will fit under my tent:

What size linen should I use and how many guests per table:

How it will look on your round table:

What size linen should I use: