Always put her in the shower before me. She still takes an age. Fucking about with fake eyelashes and the like.
Then if you say 'I'll wait down the pub' it's like you've just called her ma a whore. Instantly volatile
I take it you’re employing the time served tactic of telling her it’s drinks at 7 and telling everyone else 7.30. Knocking the bedroom clock forward 15 minutes is a quick win too.