Does this walmart have a gas station? If not what is the closet one that does?

Yes it does it's located on the Sam's lot

Across the street. It's a QT

Sam's has one, but you have to have a membership (paid yearly club card account) card, or you can't purchase the gas here. But QT is literally in walking distance. :-)

No

Yes

Yes. Towards the end of the lot across from Sam's