Well, thankfully Poly is currently getting a much needed refurb so hopefully that part of the equation is improving. Right now the trash in the hallway is there because rooms are only being cleaned at most every other day, and with limited seating at QS a lot of people take the food back to their room. Unforutnately those trashcans are just too tiny, and after two days we were overflowing all of our cans and that was with limited use in the room. Thankfully they put all the bood in big paper bags now, everything is neat and tidy, and you can just set those out. I've been three times now, one trip doing a split stay, and they were really good about removing trash pretty promptly. However, I've been to a lot of hotels and every single one had trays in the halls (especially after breakfast) so it's not uniquely Disney. People just don't want them in their rooms junking it up when there is already limited space, but how Disney approaches cleaning it up is a completely different issue. I've never experienced trays out for days, but I haven't stayed at Poly either so maybe it's a resort specific issue.