Would a zoo be a worldly amusement?
Trip to the Smokeys a worldly amusement?
Boating on the lake or river a worldly amusement?
Watching a parade a worldy amusement?
So to me it is not defined and must be defined by the ministry.
The Amish Ordnung is all unwritten. I think that would be a better policy. That way the ministry can change it at will.