Vanda Sanderiana. What to do??

[Bud]

If you inherited this potted then allow several weeks for it to accustom itself to your environment. I noticed the leaves are not fully open (it is semi-closed) you need to provide it with more bright light and warmth.
I see that you have a humidifier=that is a great help.
Philip is right, with that kind of media mix water it every other day or when you see the mix has dried out. You cannot rot Vanda roots but you can manage to infest it with fungi and bacteria with stagnant water on the roots.
Follow the culture and this Vanda will bloom for you this year.