Can I use dining rewards for food at the gas station store

Yes, that's what I always do. You cannot use for gas tho.

Yes

Only in casino dining

I don't believe you can.

I think the dining rewards can only be used at the casino restaurants. But doesn't hurt to ask at the front desk.

I think you can as long as they take it

Joann I don't think so but if you ask at the front desk they will help you, their very nice