OK, I actually stayed at the RIU Palace Punta Cana next door. However, the real story was at the Macao. They have a Casino that is pretty typical for DR. The slot machines do not pay well. The blackjack is suspect. An old trick for unregulated casinos is to remove face cards from the deck and replace them with 4's and 5's. This does not mean the house will win, but it increases the houses edge significantly. Instead of a 1% advantage, the house may have a 10% advantage, thereby increasing their edge tenfold.
The real story though was their TEXAS HOLD'EM game. It was a $5 sb, $5 bb, $100 buy-in no limit hold'em game. It was extremely easy. Even the regulars played very poorly. I could not believe how easy the game was. The house cut is 5% but that is easily overcome since it is a no limit game with very inexperienced players. Try the game. A nice guy at the table is Carlos who is a regular and a local. Tell him Luis sent you.