On Saturday, I saw my nieces for the first time since before the plandemic. I asked my 10 year old niece if she still wanted to climb trees and she got all excited. Their father said we can get together when it gets warmer to climb. They are about 10, 8 and 5 years old. I am going to put an SRT rope over a crotch and show them how to climb. I was also going to set a second rope so I can belay them from the ground. I suppose the worst that could happen is I will have to climb up to get them if they can't rappel down. I figure the 10 year old may go up 15 feet, the next maybe 10 feet and the little one 5 feet. I have to set a free swinging line for fun. Any concerns I may have overlooked?