Blackjack games, in general, come in two varieties. Forget house rules and blackjack variations for the moment. I am talking about run of the mill, general casino blackjack.
When you walk into a brick and mortar casino and amble your way over to the blackjack tables you will see two types of games right off the bat. In some games the players will be holding their cards and at other tables the players are not even touching their cards, let alone holding them.
What is the deal with this?
When only or two decks are being used the players will be allowed to hold the cards—but they can only use one hand. One hand with cards and the other nowhere near the hand holding the cards. These are known as face down blackjack games, and their rate of play is slower than face up games.
Face up games are blackjack games in which four or more decks are being used, and the cards are dealt from a show. In a face up game the players are not allowed to touch the cards at all. Think of it as hands-free blackjack.
The reason for this is that the dealer can quickly give the hand totals without the players taking time to do the math on their own. This also prevents players from marking cards or even switching them. It is all in your best interest is how the casinos present face up games.
However, blackjack dealers are quick with the cards, and the rate of play is sped up when playing in a face up game. This means that you are playing more rounds per hour, which means that you have an increased chance of losing more per hour.
Unfortunately the majority of blackjack games are played with four or more decks. And since there is nothing you can do about the odds you get from the increased rate of play at a face up table, the best you can do is look for a blackjack table with the most players. After all the more players there are, the more you the rate of play drops. And that means that your blackjack odds can go back up a little.