I've booked the restaurant for Tuesday 3rd July. I hope this works for you all.
Helem Club is close to Place de Clichy (Metro lines 2 and 13) and has great reviews on La Forchette and Google. It's a great place for a Meetup as we can have it to ourselves if there are enough of us.
How it works:
$35 covers an aperitif, starters and main course (vegetarian, but not vegan option available) plus wine (approx. 2 glasses each) and karaoke all night long.