Okay, rather than argue over watering regimen, all I'll say is if it's hot, I mean over 90 F and you have low humidity I'm not surprised you'd be able to water everyday and be able to get away with it.
I've also rotted the roots out of these by watering too often as well as growing in pots that are too big.
The humidity here is actually much closer (surprisingly) to what they encounter in nature. I just recently checked and the relative humidity during the day is actually around 50% to 60% during the day in my growing area, and 80% to 90% at night. Sometimes, the air here can just hover. But most of the time there're slight to strong breezes. Summer temperatures are anywhere around the low 90's F to around 100 F during the day, and 55 F to 65 F at night. Winter can be as cold as 36 F but averages out at 45 F at night, and the mid to high 60's to mid to high 70's F during the day. Fall and spring are roughly the same with daytime temperatures in the 70's F to 80's F, and night temperatures in the 50's F to 60's F. When I had one, it was grown outdoors in partial sun. I had bloomed these out twice before I neglected it due to personal reasons I won't disclose.
If I had to do something different from when I had it, nowadays I'd bring the plant in at night when it starts dipping below 55 F or 60 F.
I just don't like the practice of watering potted plants everyday anymore (with the exception of Disas when they're in growing season). I used to do it with water loving plants like Pleuros, but now that I've grown orchids for a while, I don't do this anymore. There was even root rot amongst Pleuros in my collection by watering everyday when grown in full sphagnum moss.
In general I now recommend excellent drainage and some drying out between waterings for those that love water. And yes, Pleuros can stand drying out a bit (just not over a very long period of time).
Ultimately anyone can believe what they like, but just as a final note, I'll also defer to an outside source that I feel says it the best.
Miltoniopsis Culture
I wish you and your plant well.
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