A 10×10 ft clear area (gym floor, cafeteria, backyard).
We bring all tables, and cleanup supplies. For indoor shows we can condense down this space if needed.
For petting zoo style set up, these displays would have the reptiles out and on full display, we have a tent that we bring and up to three tables, sm, med and a larger one.

These photos show an example of how much space we need.