Tokyo Doitsu Mura
I never have figured out why places, that are clearly not in Tokyo, are still designated as "Tokyo" something or other. Tokyo Disneyland and Disney Sea are in Chiba folks, not Tokyo. That being said, Tokyo Doitsu Mura or German Village (in the middle of Chiba Prefecture) is the best place to visit for Christmas lights and illumination. You need a car or have to take a bus to get there, but it is worth it. You can even have some German sausage while you are there. Lots of great photo opportunities. If you have a car or can take a bus, it is definitely worth the trip to the middle of Chiba Prefecture on the Boso Peninsula in Sodegaura, Chiba.
Here is the link if you want to take a bus tour:
Here's the link to Tokyo Doitsu Mura: