It is a matter of frequency. Evenly water inside the pot throughout the roots. Let it drain completely. Some people prefer soaking the root area up to the edge of the pot, for 10 to 15 minutes once every 5 to 10 days. Some people prefer just watering with a water can all over the plant including the leaves once every 3 or 4 days.
Some people prefer spraying or just misting the leaves everyday.
Always water in the morning. No need to water the flowers. For most orchids, it is save to water them twice a week. Yet depending on where you live. Outdoor orchids need to be water every 2 to 3 days.