In the pub where I work - Hello HuwG - the Landlady came downstairs on Monday sporting a very elaborately embroidered waistcoat. She hadn't been able to wear it to work before now because it would need dry cleaning every day.
A lady was able to nurse her child in the snug, whereas before the ban she would not have been able to; the air in the snug could quite literally turn blue with cigarette smoke.
And not only was there no washing of ashtrays to be done, the students who frequent the pub bough the old ashtrays.
We have had a couple of older gentlemen who have asked for an ashtray, to both of whom I replied "Certainly, that'll be three thousand quid".
Other than that, the only concerns came from a couple who were worried that they would loose their seats when they went outside for a smoke. A couple of "reserved - gone outside for a smoke" signs, took care of that.

Pilgrim