I do not suggest you take Marijuana anywhere with you in a foreign country (unless it is Amsterdam). You are always subject to the local laws and if the cruise linbe officials catch wyou with it on board and they allowed to turn you over to authorities in the next port.
Buying and using drugs in any foreign country is very risky - in most cases the tolerance is even less than it is in the US, and imagine the expense of having to defend yourself legally while detained 5000 miles from home?
I definitely recommend against it.
Also - don't you think it is a little risky posting an email address and telling the public you love to buy and use an illegal substance? One of our board monitors is an ex-Florida policeman, fer pete's sake.