I know it sounds dramatic, but my kids were really sad.
On our second to last night at MK as we were leaving the park my DS8 asked for some popcorn. On the price sign it listed that they took dining plan. So, we stood in a long line only to find out that they only took cash - which I had none. The park was closing, so we had to leave without it. DS was tired and sad. I know that being very, very tired played into it.
SO, on our last night... I made sure I had cash. We watched the last Spectromagic parade then rushed for the popcorn cart. DS danced over going on and on about how good Disney popcorn was. We got to the end of the line but were turned away by a CM who said the line was closed. DS started to cry. (Again, being exhaused played a big part of this.) We had to stand beside the cart to wait for DH. We watched as they scooped all the popcorn into a trash bag and threw it away. I begged the CM to let me buy some, but he said no.
What a way to end a trip. Not very magical.