help what does 420 friendly mean 420 friendly. What does it mean

No one really knows exactly, Now when someone say's i'm 420, they're letting you know that they smoke marijuana/pot. But the meaning and the origin of 420 well there seems to be different theories to that, here are some reading for you. (cannabis_culture)

As far as your first question yes, i take it you're over 18 and you do need a permit, check with your local City Hall, if they don't have the answer for your cookies, they will direct you properly.