Members of the West Buechel City Council believe that any four of them (a quorum) cannot come together at the same time and in the same place without first giving proper notice, or it would be a violation of Kentucky Open Meetings laws.
This is exactly wrong.
The whole City Council, or any subset, can gather for beer and pizza at any time without giving notice or making the party open to the general public. It's sort of a Constitutional right to do that. Freedom of Association.
It's just not an official City Council meeting.
Additional elaboration and clarification:
KRS 61.810(1)," All meetings of a quorum of the members of any public agency at which any public business is discussed or at which any action is taken by the agency, shall be public meetings, open to the public at all times . . . ."