If you're going to Idaho Falls and miss the chance to go to INL, you're missing out. They do tours and they even have the EBR-1 atomic museum!
I've got some friends who work there, one of them is a young woman who is also a member of Mothers for Nuclear. They're always looking for chances to meet up with young people, especially other girls, to promote nuclear technologies and careers in STEM... so if your daughter has any interest in that kind of stuff, let me know and I could put you in touch to see if they could do anything cooler than usual for you guys.
INL Visitors