I dont have any children but there is a subgroup on TU called "Omnimoms & Omnipops" for people with childre on the pod, I suggest you check it out for some answers/insights. Good luck, and PEACE.
Our son, 7, uses the Omnipod. He has had it for over two years and we love it. No tubing, easy to use, and so very cool. I highly recommend for little ones. The only drawback would be that the pods, as opposed to sites for a tube pump, are big for a toddler.
Great customer service from Omnipod, and much more affordable than a traditional pump.
Best wishes!