Gordon Bennett. The cafe is even more obtuse than my usual playground. I meant the website was written by a social-climbing snob.
Dell's got a good point, actually. If you want to pull, you might do better turning up in a scruffy lounge suit. I was assuming this was one of those tedious dinners where the objective of everyone present is to get as pissed as possible as quickly as possible.
Men's formal dress is very dull. I'm scouting around for a source of interesting, colourful, possibly embroidered gandhi jackets or frock coats - largely so that I don't have to wear that abomination, the black bow tie.