Adult Lifestyle Cruise, Full takeover, Clothing Optional

Adult Lifestyle or Swingers Cruises.. Who's been on one. Was it a legit swingers cruise, clothing optional or was it a regular cruise but booked to through a party group (normal cruise ship rules apply, but in the lookout for other party group members) or was it just a simple regular P&O or Celebrity ect cruise that you looked for like minded passengers.. Who is the best to book through, how was your cruise, did you get as much action as you hoped for, what was allowed on your cruise?? What did you see or do that you thought" oh WTF" lol. Was there any "excess" (too much drinking, drugs, porn, open play??)