Yes, it's true. No credit cards. Only cash, check or debit. If you are like me and forgot to bring your check book only to realize after all items have been scanned, they will look at you in a disappointed sort of way, and pack your groceries back up into your cart. They will then put your cart into cold storage until you go get that checkbook and pay, ashamed, at the service desk.
I love the selection and the prices, and I'm learning to navigate this labyrinthine store after recently moving into the neighborhood. As others have said, the produce isn't great. I try to go at odd hours to avoid the crowds, and under no circumstances do I attempt a Woodman's run on the weekend, unless maybe to just their liquor department.
Also, I've found that this isn't a great store to go to if you just need to pick up one or two things. It's just too big, and unless you know where you're going it's also a little confusing. It is great, however, for picking up lots of groceries at once.
Woodman's is across the street from the East Transfer Point, so it's easy to get to by bus if you need to.