Golden Pearls at Room Temp 1 Week O.K.?

I will be out of town for 9 days, and I will have someone feed my reef
aquarium for me while I am away. I am trying to simplify the feeding
regimine as much as possible. The simplest plan would be to feed
flake food, and golden pearls at the same time. Further I thought I
could simply mix the flake food together with the golden pearls in a
small plastic bag for each feeding day ( plan to feed every other day)
which I could place on a table next to the aquarium. Any thoughts if
the golden pearls would go bad after a week or so at room temp?