ur blog is so attractive and the pictures are so beautiful!
We also went to Tokyo and Fuji last month, the trip was v. similiar to yours, also started at 12/7, maybe we've met each other in the airport!
I also stayed in hotel New Century and also played the firework in the playground outside, it's really fantastic!!
Personally, I don't like Kidzania v. much. U need to quene up for at least 1 hour for every job, my son really got v. bored during the waiting time. He couldn't communicate with the other kids and he was rather restlessness then. Also, I think communication was actually v. important in every job, even for the job like 'fireman', they talked for a long time before go to the fireplace, if u know Japanese, I'm sure he can enjoy more.
I went to Safari Park near the Mt. Fuji, v. good and interesting, u may consider it next time.