Re: How do Dominicans book their vacations at reso
Many hotels give better rates to Dominicans, but all people staying must be able to show local residence, else the price will go back up to the tourist price. You generally won't get away with letting a Dominican do the booking and then have one of the guests be a tourist (not a resident with ID to prove it) but it has been done.
For some hotels, calling the hotel will get you the rack-rate, the highest possible rate. The best rates are often obtained through tour operators, who have pre-negotiated special pricing. It all depends on the property. For a large hotel, always check with multiple tour operators, their web site, and try contacting the hotel directly. Prices don't vary much for the very small hotels.
You can find a bunch listed at www.BocaChicaBeach.net/links.html and see the section labeled "Travel Agencies and Tour Operators".