For those of you that have kids or have already raised kids

I find it interesting that everyone suggests letting the kids choose the trip. I've tried that. Their response is fantastic, "It doesn't matter where we go. We always have a good time."
Out of three kids I can get two responses. They want to visit Yellowstone and a local water park!
Hopefully 2017 for Yellowstone/Tetons and maybe even Glacier; which we could do if we limited our park stays to three days max. We'll see how it goes.