There is no definitive answer to this question as it depends on your individual playing style and preferences. However, it is generally safe to say that you can use DK dollars on blackjack if you are comfortable with adapting your strategy.
In general, players who use smaller denominations (ones, fives, tens) tend to have better luck because the odds of getting a good hand are greater when playing with smaller coins. Conversely, players who use larger denominations (hundreds, thousands) are more likely to get caught up in the “house” advantage and end up losing money.
Ultimately, it is important to experiment with different strategies and find what works best for you. If you are new to blackjack, we recommend that you start by learning how to play basic strategy before experimenting with other methods.