I'm not going to write a letter. I was venting. And after thinking about it, the CM's worst offense was not explaining exactly how the GAC worked. If she had said, "you will need to wait on the Fastpass line where it is available" and changed her tone, the entire experience would have been different for me.
I'm annoyed at myself for not having been more informed. I never knew the exact words that were stamped on the GACs used for this purpose. So, I didn't exactly "get it" when the CM gave me the card. Plus, she made it sound like, "look here, missy, you're not getting a free ride here. We'll give you a comfortable place to wait but that's all you're getting from us. It's not like it was before." So, I was confused after having read how it's supposed to work on these boards. No one here mentioned that they did away with the system, so her comment that Disney did away with the stamp in April just further confused me. She was just not clear with me.
I really wish the CMs at Guest Services were better trained in this respect. It was very difficult for me to ask for help. And to be treated and spoken to in that manner was rather humiliating.
Anyway, at this point, it is water under the bridge.