Haven’t seen it pointed out, yet, but it should be noted that a chain link fence and some tents are structures that have been completely toppled by far less than 3000 people many, MANY times. These are very fragile things they are building.
On an unrelated note, bolt cutters are not expensive and neither are ground bloomers, tape, and plyers.
It's the surrounding Everglades that becomes the problem. But idk, I don't think I'd give a fuck vs staying there and dying from West Nile, flooding, heat stroke, hurricane, atrocities, etc... and with 3000 people, you have a much better chance