Thanks so much to you and everyone who gave advice! If I ask at the front desk too add them, they would do that even though they are both listed on their own room? Also, would they allow me to have a room on their floor, adjacent or connecting to their room, but still have access to the club? Or do I need to be physically staying on the 5th floor to gain access to the lounge?
I wish there was a club room available for them to upgrade to. Maybe I'll just call every day and see if one is available, to prevent the hassle. or I might just downgrade myself when I get there too be closer to their room. They aren't babies and they are fine on different floor, but we have a lot of fun together when our rooms are close by.
Also, I didn't think to bring extra magic bands so they can get into my room! Thank you to everyone suggesting that. But if I add them to the room I wonder if their magic band will open both my room and theirs?