A point that might need stressing is that watering is different for different types of orchids, as Tarev mentioned. Vandas with no medium at all and their roots waving around in the air benefit from a good shower every day. If you did that to a Phal it would not appreciate it. Also orchids on mounts dry out much faster than those in pots or baskets, so need a douse or dunk more often.
Tarev and I disagree on the idea of misting Phal leaves, but I think the important point is to never let any water sit in the crown of the plant. I have mine potted or mounted on a slant so that the crowns drain, so I do mist all mine with a pump sprayer every day. In summer the spray has weak fertilizer in it, about 1/4 strength.
Certainly every orchid needs less water when the weather is cool, and some types go completely dormant so you need to not water them at all until new growth starts up. I have an assortment in our bathroom at the moment, and some are getting a good douse with the shower nozzle every day, while most of the others just get a light spray, and a good douse about once a week. I'm also fertilizing the indoor ones weekly, with the pump sprayer.
