My twins are just over 3yo. My plan is to keep them in their cribs as long as we can. Lately one of them has been asking about moving to a bed and getting rid of her crib. Her sister on the other hand reminds me that she likes her crib and doesn't want a bed yet. We are considering taking down 1 crib and giving her the Ikea Mammut toddler bed that we have from the older kids. I figure it might be easier to move them one at a time to avoid party central in their room once they realize they can climb out of bed.

Has anyone done this? Did it work or not make a difference?