Olivia decided to invite McIver to spend the night in her 'hotel.' She set up 6 of his lovies, turned down his covers and even gave him an old hotel room key to get in the room. It's cold tonight, so she also provided plenty of extra blankets for each of them.
McIver - with all of his accoutrements.
This may be the reason for the invitation. McIver received a "rainbow in my room" for Christmas. If you look closely, you might be able to make out the rainbow. Olivia has asked McIver on several occasions if she can borrow it for a night, but he has politely declined. I guess she figured it's legit if he's sleeping in her room, too.