If you are planning to fly to DR, then you will need a DR visa and valid US visa to return to US.
If you go with cruise liners, you do not need DR visa but the F-1 re-validation is tricky business. The cruise liners reserve the right to refuse your embarkation.
If you go with cruise liners, you do not need DR visa but the F-1 re-validation is tricky business. The cruise liners reserve the right to refuse your embarkation.