Only people 21 and over can legally possess or use marijuana. You can legally possess 1 ounce of marijuana in the state. The law bans all public use of marijuana.
Recreational and medical marijuana dispensaries are up and running in Nevada. Anybody beyond 21 a years old a substantial ID from any US State (or global international ID) can legitimately buy cannabis in Washington State, some providence prohibited dispensaries inside their city limits.

Las Vegas,Carson City,Ely,Fallon,Incline Village,Laughlin,Lovelock,Mesquite,New Washoe ,City
Pahrump,Reno / Sparks,Spanish Springs,Yerington