An extra day near Nikko in Late February

I am planning my next trip to Japan, and I will arrive at Narita Airport in Late February.

My plan is to get a 4 day Marugoto Nikko Kinugawa Free Pass, and stay in Yunishigawa for the Yunishigawa Kamakura Snow festival. On the second day of the pass, I was planning to go to Nikko.

http://www.japan-guide.com/e/e2358_002.html
http://www.japan-guide.com/e/e3882.html

O the third day of the pass, I was either going to return to Tokyo, or visit some of the other attractions near Nikko, such as Nikko Edomura or the Tobu World Square. Since there is a snow festival going on in Yunishigawa, I am expecting that there might be a few inches of snow at these attractions. My guess is that the Tobu World Square may not be as interesting with two to three inches of snow, so I am leaning toward going to Nikko Edomura.

Has anyone visited either Tobu World Square or Nikko Edomura in the winter? Would either be worth going to?

Thank You, for any feedback that you can give me.