If the CEO invites you to dinner at a high end restaurant hopefully you change into something a bit nicer.
Candidate: "Dress for the job you want"
Boss: "Hired! Welcome to Fort Knox"
"Okay, what's the punchline?"
"… and orders a Flaming Sambuca"
"… so I asked him for a light"
But nah, probably better to nitpick over the details.
Would it make more sense if it was a funeral instead? A wedding?