Reachmahjong.com

Who needs a junk mat or even an autodealer table when you could have an inflatable mahjong table?
This is branded as a poker table but it's listed on eBay UK as "Summer Pool Games Inflatable Poker Mahjong Floating Table" with this pic.

It comes with four matching inflatable chairs, poker chips and a puncture repair kit.

(mahjong tiles and swimsuit mahjong babes not included)

Interesting.
But how do you stop the wall from falling over providing you even get it built in the first place?
One Rinshan Kaihou, SLAM!, and there goes the game.

Yeah, it looks like the surface isn't firm or taut enough.

It might be okay if you used flat walls like some mahjong variants (pic).

You would have to ban slamming too.