You are staying at one of my favorite resorts. I loved the balcony too!
I think that whenever you have a crowd of people, many who are tired, hot, flustered and overwhelmed, you will see a lot of behaviors that they would not ordinarily display. It is a shame really, because it impacts you even if you try to ignore it.
I agree that in all the years we have been traveling to WDW, the CM's are the people who make our stays so nice, so to see them dealing with the rude behavior of others is difficult. My family is pretty outgoing so we try to just make up for the nastiness of a few.