8:16 p.m. on August 5, 2011 (EDT)
Welcome Aboard, hikergirl80. Hope you stick around and enjoy the fun!
To address your question:
You will need to look after the boys' safety concerns. Hiking and camping are fun-type activities for almost any aged individuals, and even more-so when in groups.
However; many things can go wrong. VERY wrong. And, that is where you will need to be vigilant and on-top of things.
It's going to be YOUR JOB.
I'm talking about falls, poison-ivy, insect-bites, snake-bites, sunburn, dehydration, blisters, ankle-sprains, bumps & bruises, getting wet (and possible hypothermia), camp-fire burns, scalding water, eye irritants (like getting sunscreen in the eyes), dysentery, food-poisoning, bear attacks (recently in NW NJ), home-sickness (they're still young enough), and many, many other calamities.
ANYHOW !
Assuming you have already planned for preventing or dealing with all the above ....
I would suggest entertaining them with "IDENTIFICATION Games". Meaning: bringing along some well-illustrated and with color-photos ... books or pamphlets that show indigenous plants, animals and insects of the area you will hike and camp. See how many the boys can locate and identify. I have even seen something like "flash cards" that had the pictures on them.
Thinks like board-games can always be enjoyed at home. The Great Outdoors presents many more opportunities, and the experiences can last a life-time. It is how many of us here began our sojourn.
Best of luck. You'll get many more suggestions. Take notes.
~r2~