Day hiking with boys!! Are you insane??
Have fun, no matter what those hooligans try to do to one another the first few times that you are out.
I used to wait a couple of days then go around the dinner table and ask everyone to tell five things that they didn't ever want to do or have happen on a hike, then five things that they enjoyed. The first few lists fell into squabbles and petty name calling, but it wasn't long before the real stuff came out like how cool it is to stare into a camp fire at night or loving the sound of the wind in the tall grass or the new mix of gorp could use more cashews or getting to pick up dead things. A big shock was that no one ever complained about the weather, that was always on the "enjoyed list"! Planning for the next trip was always done at the dinner table as well.
Keep the kids outdoors and give them every chance to plan and prepare and even lead the way.
Best Wishes and Stay on the Trail!