In Indiana you can only buy 3 cases of beer at a time. You can walk out of the store and go back in and buy another 3 cases all day long. No alcohol sales on Sundays, but you can get drinks at bars and restraunts (I can't spell that word). I once had an argument with a checkout person concerning if an 18 bottle case was subject to the 3 case rule. That size was new to my area at the time. She said it was and after asking about a 12 pack, 6 pack, etc. I just walked out seeing I already felt stupid enough.

I also used to save my empty bottles from my flights and refill them and take them on the planes to drink. That was quite a few years ago and probably impossible to do any more.