I have also worked in customer service and in a bank (customer service side) and now at a hospital in a place that receives alot of complaints and the way I see it is that:
1. The CMs are saying the same thing for possibly the 50th time that day so lets be honest, their enthusiasm is a bit waning. Anyone's would be.
2. And I think this is a BIG one...most of times the CMs (or customer service people in general) aren't rude per se. It is mainly a perception of the guest they are speaking with who is probably aggravated to begin with. As you know, perception is reality. So if as a guest you are annoyed at something, an innocent comment can be taken wrong. We have all done it.
FWIW, if I get annoyed at any customer service person trying to help me and I am visibly annoyed, I always apologize to the person. I let them know it is not them but the situation and I'm sorry if I seem to be over vocalizing. It goes a long way.
And for those saying that people spend thousands of $$$ and they should never encounter a less that overly enthusiastic CM....well I you know what? Everyone paid thousands for their trip, and that still doesn't give you the right to walk around with an attitude which is exactly how it comes over. Whenever I come across someone that has to announce that I paid XYZ so I expect nothing less than ABC I know a complaint is soon to follow because they will have a hard time accepting anything less than perfection.
(sorry for the last bit. I've been reading this alot lately and it totally annoys me.)
You want to talk about how the park has changed? Lets talk about the annoying entitled guests walking around screaming at their kids, trying to get in lines they aren't supposed to be in, no respect for anyone else around them like the park was open just for them. Want to talk about dirt, how about spoiled guests who just drop their crap anywhere they see fit. I bet after a day with those people, even Mother Theresa would get a tad touchy.
**rant over**