Can you use a Walmart card for gas at Sam's club

Yes

If you don't have your card the car attendant have a guest one... [I work there for 11yr since I was 20]

I went there and filled up my truck. Thanks

No

Not sure

I don't recall seeing the Wal-Mart card as an option for payment.

If you have a membership card but are trying to pay for the has with a Wal-Mart gift card, you may have to go inside to the service desk to convert to a Sam's club gift card.