Gift cards bought in Illinois good in Missouri?

Yes

Yep! Any Cracker.Barrel. Food in the restaurant and shopping in the store.

Yes. Source: Buy parents CB gift cards for every major holiday. Illinois/Missouri split.

I would imagine gift cards are accepted everywhere. If I bought a gift card in Missouri for Walmart I could take it to Indiana. Look on the back of the gift card to see if it has an 800 number & call and ask. I'm sure they would tell you yes. 😊