I feel like there is a commonly mentioned idea that "speaking a foreign language is easier after having a drink or two".

I've found that especially true with Mandarin because (I think) a beginner speaker is more likely to speak a little more quickly which allows the listener to essentially ignore the occasional incorrect or slightly mispronounced tone and understand the what theyî're trying to say.

(This is anecdotal, but with n>1. Discussed and observed with other Mandarin language learners)