Wow, thats a long time to be in Amsterdam alone. You going anywhere else and is your dad a smoker/cool with you doing it? I've been there once, last summer. Bring a lot of money because the weed is not cheaper (probably due to the euro partially). The red light district is very touristy but its cool seeing lots of other stoners just smokin all around you. Try and do some of the other legal drugs they offer (I'd go into more detail but the rules of this forum blaauughh) But do them in the park where there's less people haha...