Tents work by having a waterproof material supported by some type of pole, over another inner shell material (for insulation purposes) that zip up keeping the wind and rain off you for a more pleasant nights sleep.
If lots of people then there will be lots of tents, simples
The place we would be camping is just land beside the sea that is owned by people I know, so generally I just give a bit of a donation towards staying. They have laid water taps and all around the area, which makes easy camping. I have a 2 man tent and since cars will be close by to tents only needed for sleeping purposes not storage. The club has tents that can be borrowed if need be
I know the area quite well so we’ll see what happens