Now that's a week well spent. The little lambs look knackered.

Which is as it should be. Push them hard enough to challenge them, but not so hard that they become discouraged.
Please don't take any of the following as criticism. It's just what I picked out of your pictures. Good photo's. Trying to take pictures after dark even with a decent flashgun can be something of a challenge.
Looking at the laddie with the mozzie head net, should we take it that there as was an excellent chance of being bitten to death?
Bug repellent is vital, not a luxury. If you don't have it, you will need a smudge fire. That's a fire that has green wood or leaves deliberately put on it to generate smoke. Or site your shelter where there is a breeze of at least 5mph.
I notice that you where showing them how to make a classic tee-pee fire. Seems to be a favorite of the Scouts. Works quite well but it is relatively difficult to construct. Have you shown them how to construct a block & brace?