An adult is OK for a few days on their own. For 10 days though you'll probably want someone to stop by and clean the tank if needed, refresh the salad, and offer some bugs a couple of times over the span you're gone.
I hire either my neighbour, my brother or my grandfather to come in once every couple of days to refresh food. The heating and lighting's on timers (well recommended if you've not already!) ... and I have a remote access camera, lol!
If there is a good reptile or exotic pets store near you, you can board him there for a fee. Just make sure they're responsible and have knowledge on bearded dragons.