There's a lot of advice in here and it's about how to best enjoy your vacation in the DR. But...
It's YOUR vacation and should be enjoyed the way YOU want to enjoy it!!
That may include everything that makes you comfortable, like not haggling, using protection, and chasing your version of a dime. I know we share a lot of do's and donts on here...but the bottom line should always be...your vacation, your money, your desires.
If you overspend, hey it was on you...If you get burned, hey it was on you...If you wake up with two chicas...you again!! LoL!!
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