Yes, THIS! We get hundreds of kids, but it does irritate me that you can watch cars drop loads of kids off at the main road to wander through our neighborhood later in the evening. Big kids...some not even in costumes! Nope, that's the point where the lights go out and we close up shop to get our little ones ready for bed.
Honestly I understand having to do the car ToT thing as we lived in a very rural area when I was growing up, but my parents only took us to houses where we actually knew the people. To just randomly be dropped off in a neighborhood - it just seems weird! And I can only imagine what it's like in the really swank neighborhoods a few miles from here.

OTOH, our lots are smaller so it might be a shorter walk for more houses here...might be why traffic is so high in this area.
Anyways, on the candy topic, I typically spend about $50 on large bags of mostly chocolate (4 bags of choc, one non-choc) and when they're gone, they're gone. The best part about Halloween here is that our neighborhood fire department comes through with their truck and tosses candy out to the ToTers! It's so fun to see the fire truck with all its lights on driving through the streets! The little kids LOVE it.