I've left all mine a few times over the years for 17 days each time - no worries .
I just fed them about 5 days before leaving and had a good clean of the vivs the day before we left and put an extra , larger water dish in each Viv , so they all had their normal water dish plus a larger second one and a few had three water dishes .. All the dishes were placed in the cool side ..
No issues at all .
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