How do I go about ordering a sheet cake from Cost Co, phone number does not have a directory for a bakery ? So wasn't sure what department to ask where can you call in an order it on the phone ?

Must go in person and fill out the order form

Must go in person to order the cake (with specific details) and pay when you pick up. Or just pick one already made in the refrigerated shelf. Just like you would @ Safeway. Compassion, transparency & equanimity, Sally

I don't think you have to go in person... If you call the number there is a prompt for the bakery department. if you dial one as soon as you call you will get the administrative staff and they can tell you for sure

Have to go in person

You have to go in and fill out an order form, that's the only way