First thing to do is to try and get a general ID of your plants even if they don't have tags, so you know what conditions they like.
If the plants are getting an appropriate amount of light and generally good growing conditions, they do not care which direction their light is coming from. Western exposure generally means the brightest light corresponds to the hottest part of the day, and that's where the concern lies.
When moving indoor plants outside, you'll need to acclimate them to higher lighting because intense direct lighting can easily cause sunburn when they're used to indoor light levels. It's best to place them in deep shade for a bit or otherwise obstruct the lighting for a at least a few days, then gradually increase the amount of light they get over the course of a week or few until you get them into optimal lighting conditions, which depends on what type of orchid you've got. You may want to go extra slow if the temperatures are particularly hot.
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