I heard that this is a cash only grocery store. Is that correct, or do you accept credit and debit cards?

They changed that in 2016 and now accept credit and debit cards.

Do they take WIC cards?

Originally yes, only cash or debit was excepted. About a year ago Adli began excepting credit too!

You can use debit or credit

Cash, debit and credit cards are all accepted here

I have used both cash and debit there.

And they allow cash withdrawal up to $200, even on credit cards, per transaction.