You don't start getting drunk halfway through buying a sixer? I mean, you can, but this is frowned upon is most establishments. Sadly, no. Costa Rica is far more intense when it comes to drink specials than any place I've been to in the US (probably because there's no MADD down here). I pass a few restaurants/bars on the way to school each day and they all have some "Buy 4, Get 2 Free" specials and happy hours are almost always 2x1. So to answer your question, no, I don't get drunk halfway through a sixer.