I've seen other posts about shipping to the DR from Canada, but does anyone know about vice versa? I need to ship personal items from Santiago to Toronto. I tried Peralto Bros but they only ship to the DR.
Check the UPS web site for their offices in SD. You can certainly ship from there to Canada or most anywhere. They should be able to tell you what you can or cannot ship.
I tried to send one small bottle in a box with other items via UPS or FedEx and was told by Mail Boxes Etc in Las Terrenas that liquor could not be shipped legally outside of the DR. Dominican Customs will not allow it.
Get a local distributor to order your liquor. If you're in the US then you should canvass local distributors for what you want. There's a good chance they probably sell the brand you're looking for anyway, for instance in Washington DC, Georgia Ave. Liquors has all of Brugal and Barcelo products for sale as well as Presidente, Brahma, etc.
ATF takes a dim view of individuals importing by the case and the hassle and cost of customs isn't worth it unless it's a vintage product. Go talk to a liquor distributor.