We didn't pre-order but I called the store prior to going there to make sure they have the green tea red bean sesame cake available & ready-to-go.
I saw a cake in the display rack with a "happy Mother's Day" message with a tag indicating "ready-to-go" with a bunch or other cakes. I asked the lady whether the cake was pre-ordered for a customer and asked if there was a smaller size if I wanted something similar. She responded in a very rude tone, saying something like "of course it's for a customer". I was surprised and wasn't sure how to reply, but she saw me reaction and changed her attitude a bit.
We ended up getting the cake we were hoping to get. I've always liked this cake - I find the sesame flavour more predominant when compared to the green tea / red bean. Would've given a higher rating if the lady wasn't so rude...