My (not so) local Joann's will take any number of coupons as long as they have different UPC numbers on them. So when they have the little inserts with a bunch of coupons in there, you can use all of them plus the one on the back of the flier at one time because they all have different numbers!
I don't know if they take hobby lobby coupons though!
You would think they would all accept coupons and stuff the same but I quess not!