Keep in mind that most epiphytes find themselves with wet roots for long periods (the rainy season) or at least often (at a minimum, from dew).
Contact with water is not the cause of root rot. Suffocation is the most common reason.
As an experiment, I have watered plants on a literally daily basis for months and months. No possibility of the surface ever drying out under those conditions. They grew just fine - actually quicker than others, as they were getting more fertilizer than those watered biweekly.
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