So, I've moved around a lot recently and the vastly different laws for alcohol are very strange to me. Now some of these may have changed recently, but as of the last time I was there
TN : No sales on Sunday. Because, you know, you can only drink on Sunday if you bought it on Sunday I guess.
IL: Pretty much like CA, but some weird stuff around happy hours and giving discounts.
MO: Seems pretty normal, but there's probably something weird.
This must only be true in certain counties in TN because I bought some Yuengling from a gas station while passing through TN on a Sunday this July.
IL legalized happy hour this year.
MO actually allows you to drink in a moving vehicle as long as you aren't the driver which is awesome.