About ritual fire in Temple

Good morning,

In September, I am stayed in a Temple in Koyasan, and I'd like to stay in a Temple where the fire ritual is performanced. Could you tell me what are the temple that they do this ceremony??

In the other side, I'd like to know if is possible to visit de cementery Okunoin free at night.

Thank you so much

It seems that it can be seen from 7:00 at Bishamondo in Koyasan Ekoin.
https://www.ekoin.jp/en/pray/

For night tours, check here.
https://www.night.koyasan-okunoin.com/