All of the above is certainly true. I found growing in my house that once a week was really all the watering I could handle--so I used shag moss to keep them moist. Houses don't have much ambient humidity. Green moss is not the same--you need sphagnum moss. I don't know if you are in the US, but if so, you can buy shag moss at either the big blue or big orange home improvement store. (sorry to not just spell it out, but those are the forum rules). I put a mix of bark and charoal (also available at the same stores) in the bottom 1/3 to 1/2 of the pot and then moss to the top. It works great for growing in the house.

PM me and I can tell you the stores and brands I use.