Here's what the Choice Privileges website says:

"A member may redeem a reward night for an immediate family member (spouse, partner, children, parents, in-laws, brothers and sisters). Immediate family members (spouse, partner, children, parents, in-laws, brothers and sisters) can use the free night even if the member is not occupying the room."

So I guess I'll get a Choice Privileges account for my husband and maybe his travel will result in a few free nights I can use in Norway.

Thanks for your help, everyone!