we'll have more of them for sure Michael Morrissey so you'll always be welcomed š¤ and to answer you re: turpentine, this comes from the Picasso quote:
When art critics get together they talk about Form and Structure and Meaning. When artists get together they talk about where you can buy cheap turpentine.
so yep, these lunches are 'casual' and more importantly: they gather 'practitioners' and 'tinkerers' -hence the ref. to Picasso and his 'turpentine' quote š