I'd gradually increase the hours of full sun they get over a couple weeks, to harden them.
Tossing a plant that's been in a greenhouse or indoors out in the full sun is like a pale person at the beach without sunscreen.
Once they get more sun, you might see that they get a red tint to the leaves or bulbs- this is the orchid equivalent of a "tan"- and is a good sign that they are getting enough light.