We just returned from our 7 night stay.
I can see why some people really like the CR, but I don't think it will be an option again for us for at least a few years. With 2 of our children being under 4, I did not find it a very feasible option as far as storage and safety. I know it is all personal preference, though.
This AM we were able to get to the MK in about 15 minutes via Monorail. The walk, pushing a stroller at a pretty quick pace was a bit over 10 minutes.
The Contemp Grab n Go opened on the 9th as stated. The options are just ok. While we were there at the Food and Fun Center and the Tempo, we were able to see a few people us the YOMD mugs, so I guess at least some people were successful at using them.
Our room was not cleaned to our satisfaction many days. We had to ask multiple times for more towels, and yesterday we found smallish lizard in our room.

Actually, our 3 yr old found it! After we sort of trapped it, we called Housekeeping and the front desk to warn them so it could be taken care of while they cleaned. When we returned, our room was cleaned, but the lizard was still there.
We asked for turn down service on our first day for our stay and got it our LAST night. That was a disappointment.
Overall we were a bit disappointed. Sad to say it ,though.