the 10% discount at Joann's store is off of your total purchase and doesn't matter if any items on sell or not, it says it on the card, so please remind them
I had to talk to manager at our local Joann's last night as the other clerk didn't know how to ring it up, every bit helps on discount!
you take your guild membership card to Joann's and they give you another card for the 10% discount that has a bar code on it so they can scan it each time