Conversation so far:
Was this an album?
Did a lot of people go on the cruise with Boyz II Men?
Was the cruise reviewed by critics?
What else did Boyz II Men do to celebrate the 20 year mark of their career?
Twenty, named in recognition of Boyz II Men's twenty years in the music business, is a double CD album with thirteen original songs and eight rerecorded Boyz II Men classics
Were there any critics of Boyz II Men's Twenty album?

Question: Why did he not want to join?
Self-contained rewrite: Why did he not want to join?