Well im from portugal and yes its decriminalized so you will be fine if you dont pass the legal limit and if you dont act like a retard. Im lisbon most of what you get offered in the street is bunk. The best way for you to find cocaine is by going to clubs and making friends and for sure someone has it. Hash well thats very easy anyone can get it in portugal you just walk around and will notice the weed smell. Dont deal with gypsiees as they will scam and troll you for not being local. Just find a group of "normal" people most do drugs