Depends on your negotiating skills when you show up at the front desk. Technically they are not required to give you Diamond bennies but if you bust out your husband's Diamond card you may get lucky, you never know.
Alternatively you could try the old trick where you use your Big Welcome night on the second night (after you book a room under your husband's Diamond acct on the first night either paid or award). Then ask them at the front desk if they can combine the 2 reservations so you don't hafta switch rooms.
