Yes, good-energy Clerics can certainly convert any of their Orisons to Cure Minor Wounds. Though it doesn't really kick in on healing people, it's a fast and sure way to stabilize dying characters.
So, what's the plan? Spend the night there, or move on? If you guys spend the night, do you leave the fire on, or put it out? Do you set out guards? Stillgem is far from tired right now.
Drithmyne and Flynn don't sleep, they meditate. Elves meditate according to the PHB rules. Since Half-Elves cannot be affected by sleep either and need to rest somehow, I assume them to meditate as well.