Space will be allocated by frontage. This is how much space you need for the front of your retail area for people to enter.
Example: I have a 10 X 10 pavilion and will have a 8 X 8 shade that I will be selling from. My shade and pavilion both need an additional 5 feet to either side for ropes. My pavilion will be placed behind my shade. So Lets add that up. Tent will need a space of 20 feet wide and that will also hold my shade. Length of my pavilion with ropes will be 20 feet. The ropes to the back of my shade can cross my pavilion ropes so it only has a depth of 13 feet. So I will request a space with a frontage of 20 feet. Each space is approximately 50 feet deep.