From someone who lives in the neighborhood: It seems as though the crowds have gotten better about not leaving trash and respecting private property, at least on my street. I'm pleased to report no vandalism at my place this year, and I found only one cigarette butt on the public sidewalk in front of my house.
It's funny because I kept getting water and setting my bottle down in the shade by the sidewalk. Then, 20 minutes later, I'd look for my water bottle and it would be gone. At first, I thought some thirsty person took it; then I realized that people were continuously cleaning up the sidewalks along the course. I still have no idea if it was an official volunteer, or just a kind neighbor. I lost about 4 bottles of water during the day! But I can't complain, because there was absolutely no cleanup for me to do at the end of the day on Galveston. Everything was spotless!