Lovely videos! I have been wanting to film some walking videos in my area as well. Iv'e heard that youtube doesn't usually monetize this type of content. Have you had any luck?
As long as you meet the RU-vid's requirement (1k subs & 40k views, if I remember correctly...) you will be monetized for sure. But wether you can make good money or not is a different question. I wish you good luck!
Their official website hasn't been updated for this year yet but I reserved a ticket in advance last year. Same day tickets were available but there was a long line. tokyochristmas.net/