Yes you can but you have to either go to boom desk or concierge to do an override. I always buy a one device plan and my husband uses our 4 free combined days of internet.
My charges of 88.99 x3 packages went from pending to actual charges, while I have pending credits of 58.98 x 3. None of my packages show refunded yet either in y cruise planers. What a clusterf**k.