Phalaenopsis in moss...questions

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Please be gentle, I'm a newbie

A woman in my office grows orchids successfully and she convinced me to try so, on a whim, I picked up two Phalaenopsis orchids a couple months ago at a local hardware store. The only concern I had was that they were both in moss, which I was cautioned against.

Anyway, fast forward a couple months (going on three months, actually!) and they orchids are not only still blooming, but they have thrown up additional shoots of flowers that are full of blooms/buds. Also, at the same time, they are growing new roots and leaves. Call me crazy, but I think this means they like me, they really like me

So here's the question, I see lots of advice against moss but mine seem very happy in moss, so should I repot when (if ) they ever stop blooming?

Finally, at the same hardware store about two weeks ago I found a lonely orchid called Epicattleya Rene Marques that has a tag on it with a gorgeous flower. So, despite only being leaves, I decided to rescue it. It too is now growing and has a new shoot growing and new roots forming as well. This orchid is in orchid bark and I'm finding it difficult to know when to water it. It seems like the few roots that are on the surface go from green when watered to white in a matter of a few days and at that point I have been giving it a small drink of water to make sure the bark is still somewhat moist, etc.

Any advice is MUCH appreciated!!!