Would actually be awesome to stay in one of these with friends

i want one!

http://www.walmart.com/ip/Ozark-Trail-Agadez-20-Person-10-Room-Tunnel-Tent/23657581

That would be great if I wasn't allergic to 90% of the outdoors. Otherwise, that would be really cool

My question is: where would you find a piece of land that large and flat that you could do this?

As if a tent like that would be much cheaper..

Now where am i suppose to find 20 friends?
Is there a sale somewhere where i can get them cheap?

20 people but just 10 rooms...( ͡° ͜ʖ ͡°)