As Sue said, it really can't be on too strict of a schedule for any of your plants, Chris. If you have a week of sunny weather and lower humidity, you might need to water sooner, than if you get cloudy, rainy or snowy weather with cooler temperatures and higher humidity.
The critical thing for the orchids is to make sure that the roots are getting almost dry between waterings. So really, sticking your finger in there every few days is the best gauge. In cool weather I'd err on the dry side. Overwatering kills more orchids than any bug or disease, for sure. As far as the fertilizer, just make the solution maybe half as strong if the weather is cold.