It will depend on your room arrangements. Are you all sharing the same room? If so, your guest will not be able to purchase this type of pass, since everyone in the room has to be using the pass. At least that was what we were told when we took my sister and her DH a couple of years ago. If they are not staying in the same room they will be able to use the UPH. But they will only be able to receive the 10% off if they are staying in rooms that you are paying with by points. I hope that this makes sense. And maybe someone else will have different information that is more recent.