There is a sports bar here in New York that I've played at with the band and it has a patio. The owner put a kerosine heater on the table, for smokers in the winter, and the town told him that he couldn't have a heater without a permit because the patio was considered an 'enclosure' and also said that there would be no smoking allowed 'inside'.
No doors. No windows. Just a roof with a table.
That's really sick and going just a bit too far.