The 30% AP discount is not normal ... they've offered it twice (I think?) this year for a limited time. Usually there are many brands (Dooney, etc.) excluded from these kinds of discounts. I'm guessing due to the pandemic and a need to increase sales they have relaxed the exclusions because this particular discount definitely works on Dooneys.
I assume they can verify that I'm an AP holder because my
shopDisney account is the same as my My Disney Experience account, which linked to my annual pass. But I dunno.
The discount code is AP30OFF and valid for "select Parks merchandise purchased on shopDisney.com through October 11, 2020."