Bud Blast! Hate spag!

[NYCorchidman]

Many phals are sold here super tightly packed in moss as well. Sometimes they come in bark, which is much easier to deal with.
Anyways, I am lazy as far as repotting. so I only do it when it is absolutely called for.
Also I try not to disturb the plant in bloom.

With that said, two of the latest phals bought from Whole Foods Market about three months ago, are now out of bloom and started to grow new leaves. They are still in the tightly packed moss. I probably need to repot as some roots don't look that great.

Both plants were in bloom for about three months without losing a single flower. I watered them about once every week or ten days, but little bit, say, half cup. The focus was to keep them hydrated but not drowning them.

Flowers can prematurely drop for a number of reasons as Tucker pointed out above.

The best thing I would do in your situation, to take some of those moss out and put the plant back in its pot. was the moss very moist when you took it out of the pot? you mentioned you had to fan dry it.
I was surprised because you watered only 1 oz of water in two weeks.

I would also check if you have cold draft hitting the plant. Are there ripe fruits nearby?
These are also common reasons for flowers (and buds) drop.