Don’t know why they’re making a big deal out of an 8 day trip to the moon. Gordon Cooper and Pete Conrad did 8 days in a can on Gemini 5. Frank Borman and Jim Lovell did 14 on Gemini 7. IIRC, Mike Collins said that anyone can deal with anyone if the time frame is defined before hand.
A trip to the moon would in and of itself relieve any tension that might come up during the trip. I could do the 8 days floating on my head.
Not me. I wouldn’t last two seconds locked up with a lib!