Finding legal Marijuana

I’m going to Gran Canaria on holiday with my family in December and it looks beautiful. Our Hotel is close Arguineguin, looks like a nice place. My only problem is finding Marijuana, but looks to me like it isn’t that hard to find, the problem is buying if i’m not a local. I read about someone could refer me to the «social club», and become a member of the social club and buy Marijuhana that way. Anyone here that are familiar with how all this works, and how I can buy Marijuana myself?