They'll be fine. I left my guys for 2 weeks w/o food or water changes over christmas.. they looked pretty poorly but they perked right up after a few days of good care and homemade food. 10days they'll be fine. I would slowly lower the temps on the tank (to the low 70s like 72-74*) that way they won't be metabolizing so much and the length of time won't affect them as bad.
I'm going on spring break in two weeks and I'm leaving my guys for almost 10 days (unless I decide to come back early).. they'll be fine. Levi and Jumangi will be arriving at my house next week so they're the only ones that get to stay with me over spring break.