If there is one thing you don't question a CB fan on its the limo scene in 1 07. we have that scene memorized front to back
They show her having one glass of champagne - she's completely coherent when she gets up to dance. In the limo she says "thanks for the lift" again, perfectly coherently. No slurring or change of voice tone whatsoever
IMO she told the priest she was drunk as a way to justify it to herself.
That being said I don't see what the Big deal is about DB being drunk - so what if they were?? It won't stay a problem for long.
but they definitely were