There are three concerns with etiquette when playing pai gow poker.
The first relates to any casino table game. Be aware of the table minimum-maximum bet limits, which will always be indicated by a sign. Making a incorrect wager is embarrassing.
The second concern is making sure you always set the cards correctly. You must set the five card hand higher than the two-card hand. It can be very costly, plus embarrassing, to set the two-card hand higher than the five-card hand.
The third concern is to never let other players see your cards. The casino doesn’t want players to show their hands because it players knew what cards were held by the other players, they would have an edge.