I'm too old to accept subpar beer.
I've probably returned ~10 six packs over the last couple of years:
- Heavily oxidized (liquid cardboard)
- Skunked (UV light damage from sitting out too long)
- Infected (only happened once that I can remember)
- Leaking caps (local brewery had an issue with their bottling line)
The last time I returned a six pack to Spec's Liquor in Austin, the manager tried to give me crap.
*walk in store*
me: "I'd like to exchange this."
cashier: "Why is a bottle missing?"
me: "Because I drank one."
cashier: "Ah, ok. Let me get the manager."
manager: "What's wrong with the beer?"
me: "It's heavily oxidized and has diacetyl, aka butter."
manager: "Are you sure that's not how it's supposed to taste?"
me: "Positive. I encourage you to try one."
manager: "Oh, that's ok. We normally don't except returns on opened bottles."
me: "Also, the 'recommended by' date on the bottle was 3 months ago."
manager: "Oh, that's just a recommendation. Doesn't mean much."
me: "Ah, sure. Well, I'm going to pick out a replacement."
My girlfriend had a similar experience when returning a bottle of wine that had a rotten cork (disintegrated upon extracting).