Under Washington State law, it’s illegal to open or consume marijuana or a marijuana infused product in view of the general public. Although this is a somewhat broad definition, you can generally assume it’s safe to use your products in the privacy of your own home. If you’re smoking on an outdoor balcony that overlooks a public street or public area, you would be considered to be in the view of the public, so be mindful of who might be watching.
For tourists planning to buy recreational cannabis while in Washington, call ahead before making your reservations. Some hotels have designated smoking rooms, others do not. You’ll want to ask ahead of time if smoking marijuana is allowed in the room you intend to book. Smoking marijuana in a non-smoking room can result in serious problems for you.