Seems odd that DL/AMEX charges a $175 fee for EACH additional AU Reserve card while the AMEX Plat only charges a flat $175 fee to add up to three additional AU cards when the Plat AU card arguably provides more benefits than the Reserve AU (statement credit benefits transfer over to the AU on the AMEX Plat). Perhaps if AMEX changed the rules to match the Reserve AU policy it would help with some of the crowding in SC’s with people basically getting free access when they would otherwise have to pay an additional $175 like they would with a Reserve Card.