Implemented Away mode described above. Bedside light turns on for a random time while we are away. Waterbed heater also turns totally off and turns back on 2 days before we return since it takes a long time to heat from room temp back to 29C. It typically only loses 2C in 12 hours when it's off 7 am to 7 pm but it takes 3 hours to get back to 29C. I also record waterbed temp every hour now using Adafruit free MQTT. I highly recommend this method to record data to the cloud. Once you get the hang of it, it's very easy to create a cloud based HMI and storage and display of data. I can see the waterbed turning back on and heating up from anywhere now.