We're coming to DR next week for vacation, arriving on Sunday in Santiago and taking a car service to Cofresi (Lifestyles Hacienda) on the north coast. I want to pick up a local SIM card for my cell phone. Is there someplace right in the Santiago airport I can do that? If so, do you know if they'd be open mid-day on a Sunday? Or will I have to wait 'til I get to Puerto Plata? I'm thinking Orange is the best choice from what I've read on the boards so far. Thanks for your help!