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.
Rhode Island is one of the states where most residents do not mind cannabis legalization, but the act just did not get added to the ballot yet.
Marijuana for medical use was legalized in the state since 2006, but recreational use seems to take forever to follow. This really is unacceptable, since the conducted polls show that over 60% of residents support total marijuana legalization, and the state has one of the highest percentage of residents who consumed cannabis in the past month. But complete legalization of cannabis products in Rhode Island seems to be stuck in bureaucracy. Hopefully not for too long, since legislators have stated that legalization for recreational use will happen before the end of 2017, with shops up and running shortly after that.
There are medical dispensaries across state where you can buy your favorite strains of cannabis product by showing your medical marijuana card. Dispensaries in Rhode Island also let you purchase products with a medical card issued in another state.