The message
from Owain contains these words:

Perhaps they could have different Days, so one could decide which
annoyances to avoid.

You missed out "Parking your trolley sideways across the doors while
chatting to a friend who's done likewise and glaring at people who ask
you to move" or is that an open event?

--
Skipweasel.
Ivor Cutler - "Never knowingly understood."