2nd question: How far do you have to go to enter an area where the alcohol laws are different?

I live in Wisconsin.

Example one:

Where I work (gas station), hard liquor is until 9pm, beer and malt beverages are until midnight.

4 miles down the road, different city, the gas station has to stop selling everything at 9pm.

Example two:

A gas station in City A, only 10 minutes from my house, can sell hard liquor until 9pm, and beer, etc. until midnight.

A gas station in the same City A (about 20 mins from my house), everything stop at 9pm.

I feel like the 2nd example, the gas stations are in the same town, but there must be some difference such as one being “the city of (A)” and the other being in “the town of (A)” but I am not sure.