I took two of my friends visited from abroad here and I was shocked by the attitude of the manager and staff.
My friends had VIP coupon book which gives you various discounts at many shops in the outlet and both of my friends showed it at checkout before they pay. We later noticed the discount was not applied for both of them and went back to the store.
The lady at cashier called a manager to do price adjustments and while the manager did price adjustments, she blamed on us saying we did not show the coupons and treated us in a very, very rude way. Also the lady did checkout first and did not apply the coupon was right next to the manager but she completely ignored what was happening next to her.
I never return to this place. I don't know how those coupons works for the store but I could not help thinking they do that on purpose to foreigners do not speak English (like my friends) or something not to give discounts.