My girls go to bed pretty early. (Their mom needs some space at night...) At 7, we read scriptures. By 7:30 they are upstairs brushing teeth, getting drinks, doing whatever it is they do to get ready for bed. Then they can read until 8. I had this conversation with Sam yesterday...
Sam - "Can I read my scriptures on my tablet?"
me - "Sure."
Sam - "What if I accidentally end up playing games instead..."