I was one of the ones who didn't make it, and I am still sad we weren't there. I'm just now having time to sit down and post to this thread.
Just after breakfast this day, my friend who was with me started feeling unwell. We went back to our resort, and she started getting sick and running a fever. She told me to go on and go by myself, and a manager at our resort told me I would be able to get a refund for my friend's ticket.
Once I got her settled to where all she wanted to do was sleep, I went to the Magic Kingdom to see how crowded it was, and as soon as I saw how beautiful everything was I knew it'd just bring me down to be there for the party alone. I wished our meet were planned for earlier in the evening. So, I went to Guest Relations and cried as I got a refund for both our tickets. I couldn't help it, I just boo-hoo'd, not knowing if our vacation was just over or even if she'd have to be sick the rest of her first visit to the World without ever making it to the MK. Thankfully, she felt a bit better by the next morning and we were able to save most of the rest of our vacay together.
I tried to find this thread that day to let everyone know, but I was looking via my iPhone and it was too much trouble. I didn't know if anyone would see, anyway.