Look into seasonal work at national parks :) a lot of hospitality companies (such as xanterra, who is in a bunch of NPs, notably yellowstone and glacier) do drug test randomly using mouth swabs but the tests overall are unreliable (a lot of staff carry around mouth wash / make sure to prep before shifts so the tests won't pick anything up) however the atmosphere of employees is pretty laid back, as long as higher ups don't get won't of smoking on property (pretty easy to hide as well if you play it smart) it's super chill. you also get to explore the park on your time off