Remember, you are at the blackjack table to have a good time. There is nothing wrong with taking advantage of the free drinks and casual conversation. Just don't have such a good time that you make mistakes in your play or betting. If you order drinks it is customary to tip the waitress; the opponent will gladly accept chips. As you win, try and be a good sport about it. Your playing partners don't really care to hear what an expert you are. Try your best to refrain from telling others how to play. This is quite often a hard thing to avoid, particularly when people are staying on 12 against a dealer's 10.
Tipping the casino dealer is allowed. If the dealer gives you a great run or good shoe, think about giving an appropriate tip. The dealer will be just as happy if you make an extra wager on the hand for him or her. Do not blame a run of bad luck on the dealer. They have nothing to gain by taking your money. It is just the current luck of the cards. We get tired of listening to people giving the dealer a hard time. If you're unlucky at an online blackjack table, move to another with more blackjack tips but aware of the cheating. Dealers do get lucky and often get on "hot streaks."
Others have as much right to playas you do, no matter how bad their play may be. You will really have to take it in stride when the dealer has a 5 card up and the anchor man hits a 14, takes the dealer's bust card, causing you to lose. Don't feel obligated to inform the anchor man of his blunder-someone will beat you to it! You will tend to always remember these situations. Keep in mind, just as many player mistakes work to your advantage.
If amateur play upsets you, the percentage of beginners at the blackjack table can be reduced by going to a table with a higher minimum required bet. Of course, your financial situation must be able to support the move. If you encounter a dealer who is unfriendly, or just a plain jerk, move to another table. It is not worth the aggravation. After all, you are there to enjoy yourself as well as make money.