Going on vacation, no feeding for a week?

Hi all!

I'll be going on vacation for 1 week and have 2 fish tanks.

16g with bristle nose pleco and 10-12 ember tetras, fully planted

75g Mbuna tank

They've both been running for 6-8 years so they're super stable, no crashes.

I've gone maybe 2-3 days without feeding once and they seemed fine, but I wanted to see if maybe it was too much to not feed them for a week?

I would technically be able to feed them before leaving and on the day I return, so they'd technically not eat for 5 or 6 days.

I don't really have anyone that can come feed them unfortunately.

Would they be okay?

Thanks in advance!