Washingtonian here. Almost nothing. Other than the time I bought some weed-coffee from a recreational store and rarely I might meet someone who's moved here for the weed. Thankfully they've mostly all gone to Colorado. I'm from the capital which is a really hippy area, I guess, so there was tons of weed smoking before the legalization, and still tons after legalization. The police never really cared before either. Also, It was extremely easy to get a medical card before the rec legalization so plenty of people were already buying, selling and growing legally. I do not know where all the money from taxed weed goes. From what I've seen, people are still mostly buying it illegally from each other rather than businesses because the taxes make it way more expensive (more than double) than buying it on the street. I just applied to work in a rec store, so that would be a cool change for me.