1. I put my coop in the middle of my back yard to keep it away from my neighbors. My backyard is sadly full sun, so I am planting moringa trees to give them more shade. They tend to stay in the coop during the worst part of the day.
2. I've had chickens for over a year and I've only had one get out and that was due to getting startled by something. I was outside luckily and was able to get her back into the yard. I have my run contained and only I let them out to free range when I can watch them, I have had people try to bring me other people's chickens though assuming they were mine. I went and counted and nope that's not mine haha.
3. None of my neighbors have said a word about my hens and they make a ton of noise sometimes. My head hen when she does an egg song, they all sing. It's really loud. They did it once at 3AM. I ran outside to shut them up. Having chickens is always an adventure. But if you get one that is noisy, its really easy to just rehome that particular hen.