Played my first session of double deck blackjack this past weekend and really enjoyed the experience. Watched for awhile to get a feel for the proper signals. Told the dealer that I was new to double deck and to correct me if I was doing anything wrong. I have a couple of etiquette questions for the board. When do you show a blackjack? Some players flip their cards right away. Some only flip their cards when it's their turn. Is it allowed/proper to look at other players cards while they being held(before the dealer turns them over at the end)? I don't know if it's right or wrong but there was a lot of looking at other players cards at the tables where I was playing. The dealers never said a word on this.