How to allow my kid to use a normal UI on the Kindle Fire HD 8?

[Android Central Question]

Long story short, me and my kids all hate the freetime UI for kids profiles on the Fire HD 8. I've already got the goodle play stuff installed on the tablets, but I want my kids to be able to just use the normal user interface that adults use on the kindle fire while logged in to their own profiles, instead of having to switch to my profile to get out of the overly restrictive UI that Amazon forces on kids. Is there any way at all to allow my kids to use the default UI instead of the freetime UI on their own profiles?