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The ice cube method of watering doesn't really give enough water. Most people here don't like it, some do day it works OK, but I think it depends on your environment it's a bit of a gimmick really.
I often water straight away after repotting, though I know several folks here think letting them dry for a week or so helps the roots heal, and I keep thinking I should let them dry... then forget and do it my usual way
I water based on how the medium and the roots visible through the pot look. A good beginner method is to wait until the medium though the pot looks dry and the roots that are visible have turned silvery. Then water again thoroughly, either soak the pot (right up to the top) in water for 15min or so, or by pouring a lot of water through the pot. Make sure the pot is not left standing in water after you've drained it. I often think coming back another 15min after draining it and pouring out what has collected in the bottom is a good idea. I also on many of them use outer cache pots designed for orchids which hold the inner pot off the bottom so that the collecting water does not touch the inner pot.
Once watered wait until the roots turn silvery again before watering again. That might be a few days, or a week or so. Personally if it is longer than 2 weeks I feel it's not drying fast enough and try and increase air-flow to speed it up. The roots need airflow as well as water and if the medium dries slowly it often indicates insufficient air flow around the roots.
If you don't have a clear pot (it's not essential, though one with holes in the bottom is) then a couple of other methods can be used to judge when to water. The easiest for beginners is to use a wooden skewer pushed into the centre of the medium. Leave it in and use the same hole each time so as not to damage the roots more than necessary. Pull it out when you want to know if it needs watering. If it's damp then it's not time to water yet, if it's dry then it's time to water.
The other method is to tell by the weight of the pot if it needs watering. This is best learned while using one of the other methods. An orchid in dry medium is much lighter than one in damp medium. With practice you can learn to judge if it's time to water by the weight.