There are also DVC rooms on the 5th that they could designate as CL and just charge the extra points.
Or, it's also possible the lounge is shut down as part of the refurb - although I've not seen anything saying that.
I doubt they're going to shut down the lounge because there are a lot of cash rooms on the 4th floor.
It will be interesting to see how they handle the club rooms during the refurb. Do they do them all at once or do one lockoff at a time? If they do have to relocate a club guest where do they go? etc. Same for the value rooms.
Part of me wishes they would just do the entire value wing and the entire club level at once to interrupt everyone's walks so we all get a fair shake at these room types again, even if only for a moment.