The train club that I belong to has 100 plus members and the Layout is portable and Set up at train Shows and conventions and it is 28ft long x 18 ft wide with 2 O gauge main Lines and a Bypass track and one Standard and S gauge loop.There is a Layout comittee that Sets up and maintains the layout,but as with all organisations the work is done by a Small core group.The main users are those members without home Layouts.
Mikey