As I mentioned about guttation, it's an "outlet" for excess water in various non-orchids. Although this looks like guttation, that fact that it has the consistency of nectar is problematical for me. It could still be due to extrafloral nectaries located on the leaf edges, and therefore "designed" to attract ants, but I don't recall seeing it in orchids to nearly this extent. Anyway, I wouldn't worry about it. The fluid can be easily removed with a damp cloth. Your orchids look perfectly fine. Keep doing what you're doing.
wuness
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