Small mounted orchids

[Jimmy87]

Hello everyone!
Apart from two phalaenopsis that I've had for a long time, I'm a beginner in the ochridae world.
I've just acquired two small orchids mounted on cork, a "Vandoglossum Furuse" and an "Angraecum Didieri".
I'd like to know how to water them. So far, I've sprayed them daily, but should I also bathe them?
And every two or three weeks, I'm away for 2 or 3 days. Is this a problem?
The humidity in my apartment always varies between 45 and 50%.