The Fireline had just come out before the road trip, and when the kids saw my «first gen» Fire it was better sized to their hands than the iPads (pre-mini, of course) and Angry Birds was all they needed to be happy.
This will keep them outof the firingline, however, some kids find this isolation from the divorce as alienating and therefore you need to get their opinion about the situation before you make any concrete decisions about their summer.