Some are closed on Sunday by choice. Every one listed has a Sunday license though. In Pennsylvania a Sunday license is required in order to serve beer on Election Day. To get one you must show the state that you sell a lot of food. If you sell too much beer then you can't open on Sunday.
Taverns can sell beer to go.
If you are from England that means take away. You can only buy the equivalent of 192 ounces in a bar. That's two six packs of 16 ouncers. Buying in the bars is more costly but you can buy a few cans if you want. To buy more you must go to a distributor.