Miniature Phalaenopsis care?

[Syrinth]

Hello, I am here to get some help on a problem that has been bothering me for a while.

I work at a grocery store, and yes... we sell orchids. Especially Miniature Phals in clay pots with no drainage. I'm wondering what advice I can give to potential owners who are passing through my lane to help ensure that as many of these poor things live as long as they can?

From a little bit of poking around, I noted they seem to be potted in sphagnum and have some kind of plastic wrapped around it.

I've been keeping my advice to "repot the poor thing it has no drainage" but is there anything else I should be warning the customers about?