We just stayed at the Poly...we loved the resort. BUT since you mentioned the CM's I'll join in the discussion.
Let's see...for the most part they were all nice with a few exceptions that ranged from down right rude to just stupid.
I was told a few months before coming by a CM named Randolph that something special was going to happen for my entire family and it would be an unforgettable vacation for all of us. Well....that something special didn't happen and I wasn't going to ask for it. Not rude, just disappointing.
When we checked in I asked the CM (who was very nice by the way) if I could bring down a gift so someone could sneak it in the room while we were gone so my girls would think Lilo gave them a birthday present. He said they would wrap the presents up really nice and put balloons and autographed pictures of their favorite characters with it.
Well...when the time came we walked into our room to find the packages wadded up in a Disney shopping bag, no balloons, and one autographed picture of Pluto (not on the favorite list) PAPERCLIPED haphazzardly to the wadded up bag. Not rude, just disappointing.
Oh...I forgot to mention that I had to go to the front desk and ask about where my packages were. I had given it to them 6 days prior and the CM (older man) at the desk at that time was pretty rude about it. It's not like I was demanding the balloons, but I was the one who bought the packages.
Let's not forget one of my children nearly drowning in the Volcano pool when she slipped on the bottom in the shallow in and couldn't get her footing. The life guard looked right at her flailing away and didn't even flinch. As the parent I am responsible but why have the life guards if they aren't even going to offer assistance or even ask if they are okay. Not rude, just not doing her job.
ahh....can't forget about the older lady who does crafts with the kids and wouldn't let my girls make two flower bracelets. A. There wasn't a massive line of children that even wanted to do the craft (mine were the only ones there) and B. at those resort prices I think that the Poly could have afforded more than one flower bracelet per crafter. She was rude.
After being eaten alive by fire ants in the Disney bus from TL I went to the front desk to ask what to put on the bites. They stared at me and said..."Oh my do we need to call 911?" Not rude, just stupid.
I'm sure there were a few more cases, but those are the ones that stick out in my mind.
Did it ruin or trip? NO, Did it make us not want to stay there again? NO. We still laugh about the scenarios (except the near drowning) This could have happened anywhere at any hotel in the world, BUT you do tend to expect higher service at Disney especially when you're paying through the nose to stay there.