Bringing any type of drug into or out of a country is illegal in most places, so don’t bring them with you when traveling (or at least make sure it’s legal first).
Driving under influence of drugs is also illegal in most places, and for good reason. Do not drive under influence to avoid any problems.
Many places do not allow the use of drugs in public, even when they are legalized for recreational use. Make sure it is legal before lighting a joint in a public place.
On November 2016, Maine became one of the first states on the whole East Coast to completely legalize the use of cannabis products both for medical and recreational use. It was not much of a surprise, since the residents were very accepting of the cannabis users long before, and have passed in a legalization for medical use of cannabis products very early, since 1999.
Overall, Maine is a cannabis-friendly state and with the complete legalization finally coming through, it is a great destination for those who want to enjoy a relaxed holiday, or medicate themselves with various strains available for purchase in the state dispensaries.