Welcome to the forum! I was born in Florida! Cape Coral to be exact. Lovely place to catch critters. Sounds like you've got some awesome kids. Anyways, let's see if I can help...

First of all I'd like to say that these guys aren't a fan of being handled. They're really fragile and you should have wet hands when handling. But it sounds like your kids respect animals so I don't think that should be an issue. If you're looking for a more sociable critter than think of White's Tree Frog. A lot of the care is the same... but more on that...

So these guys like to climb. When thinking of a terrarium go for one that's taller - not wider.
They like to stay warm. Around 75-80 degrees for about 12 hours a day on and off. This can be done with a timer. 5 UVB recommended.
They're nocturnal so a day/night cycle and appropriate lighting is necessary so the critter doesn't get off whack with sleeping.
These guys are communal - so more than one is okay.
Bark chippings are recommend for the substrate.

Hope I helped! I don't know much on Waxys. They sure are interesting looking! I'm thinking about getting on for myself!!