It looks wonderful, Ursula. Such a lot of interesting blooms there.
Mine is just one section of our pool cage,where I have set up two misting heads on timers. They are used whenever we are away traveling, or even when we have a busy time at home and I know I won't have time to mist the orchids by hand.
The trellis comes off the wall when we leave town, and moves over to where the automatic misters are. The little shelf unit in the corner has the Phals and my two little Paphs (plus anybody newly potted) under an overhang so I can control how much water they get when the weather is rainy. Even that northeast facing corner gets a little sunshine early in the morning at this time of year, which they don't seem to mind.