I was on this cruise, they didn't give a 24 hour notice for the crew party and it was off limits to passengers so we couldn't join unfortunately because it looked like they were having fun! I had a boardwalk balcony that overlooked the party so we people watched a little bit. It was definitely an open bar and the crew were having lots of fun! It was loud but it didn't really bother me and my family. My kids thought it was cool to see the cast of mamma mia partying it up and enjoyed listening to the music!