I heard on the news NJ allows for "reciprocity" regarding mmj. This means that any patients visiting from out of state can buy
from any dispensary in NJ. This is not the same with NJ patients and other states, like CT (which does not have dispensaries, yet) or Maine
(which will turn down anyone without a Maine state license... even a passport will not work). In short, each states laws vary.
What I would suggest is Googling dispensaries in a given mmj state, call, and ask them
. They usually will be happy to give you an answer.