I find this confusing, both visually and conceptually.
Visually: the background is extremely busy, so much that the kids are not well separated from it. Also, I cannot tell if the kids are holding hands or not. It looks sort of as if they are, but I think they are not, the hands are just visually overlapped.
Conceptually: is this a photograph of trick-or-treaters being very small in a large context? The title suggests this. Then I think they are too large in the frame, and I am not feeling any particular vastness in the frame for them to be lost in. On the other hand, if this is a picture of some cute trick-or-treaters approaching a house, then the kids are too small in the frame. Basically, this is in a conceptual no-mans-land between a picture of kids, and a picture of kids in a larger context. Maybe this a picture about the banality of suburbia? The house with the A/C unit and so on does completely fill the frame. If that's it, then I am not feeling those notes hit hard enough to really sell it for me.
It looks, frankly, like a not very interesting snapshot of my kids walking up to the neighbor's house. There's some potential for ideas in a photograph like this, but I don't think this one hits it.