Ralph Engelstad Arena offers Sioux Shop discount Effective June 1, the Ralph Engelstad Arena is offering to all staff, faculty, and current students, a 15 percent discount in the Sioux Shop. Discounts will not be given in addition to sale items. When purchasing items you will be required to present a UND photo ID to the clerk at the time of purchase. You will not be able to "give" your discount to a friend, or relative. This discount is a benefit to you and must be respected as one. Abuse of this benefit will result in termination of the discount. Ralph Engelstad Arena Sioux Shop withholds the right to refuse discounts without proper ID. Ralph Engelstad Arena also withholds the right to discontinue discounts at any time. -- Submitted by Ralph Engelstad Arena.