leaving for a trip, will my mantis be okay without food for 10ish days?

[The Wolven]

I use homemade fruit fly culture media to give the adult flies some nutrients and water. Is that considered gut loading? I don't know which nutrients mantids (or invertebrates in general) need, but this seems to keep them plump and juicy a little longer. The media contains sugar, brewer's yeast, and potato flakes.

Annddd just realized I already replied to this and the forum decided not to load said reply. Now here we are in the infinite expanse of space.