go to the "Plaza Larimar" at the " cruze de Friusa", every cab and public bus driver knows it, there you get the orange card and important, you'll get it activated. we have a lot of orange shops in the area, but they don't sell activated sim cards. costs are around $10.-. bring some time, those shops are full all day long, sometimes one hour is nothing before you finish.when you arrive at the small plaza you can not miss the shop, it's located on the groundfloor on the center of the right side
have fun
Mike