Did anybody notice all the littering?

I must be uptight by always noticing anybody littering, and sometimes saying something about it. In this movie one couple simply walk away from their beer bottles on the park grass. In another scene another couple dump a handful of pregnancy test sticks in a public pool. Maybe they were the same couple, but they all seem to do a lot of other rude things like speaking way too loudly in public which would make most other people think they are, um, not very nice people.