Because it's a healing peptide I can't see any reason why there would be a negative effect combining the two, I'm also someone that doesn't drink though (used to, but toooooooo much) so I'm going to say just don't get wasted and most compounds are "ok" If you were just occasionally having a few.
I'd imagine if bpc could actually prevent someone from getting drunk or remedy a hangover It would already be being marketed for that purpose. Big pharma doesn't like us building muscle and healing ourselves, But if you got a boner pill or a hangover cure they're all over it