Lockers near Hongu Taisha

Hoping to travel across from Shirahama to Shingu, stoping for the day at Hongu Taisha. We will have our luggage (two small roll-aboards). I see here that they describe lockers are available near the steps to the shrine.
http://www.tb-kumano.jp/en/q-and-a/coin-lockers/#map
Have you used them? Will there be enough if we arrive on the first bus from Shirahama (arriving around 9:30)?

At least three lockers; two in the map, three on the list.
http://www.hongu.jp/files/4513/1347/5769/Hongu-map.pdf
http://www.tb-kumano.jp/areaguide/coinlocker/#hongu

The one titled "Luggage Shuttle Service Torii" on the list does not have any limitations. I suspect they have a large room just for suitcases, not coin-lockers.

Thanks for this detail.