My snake pretty much sleeps all day in the cool hide. Once night time arrives, she hangs out on the warm side, slithers around a little bit. Caught her drinking last night when I came home from drinks with some friends lol.

But to be honest, ask yourself this. How often are you actually staring at your snakes enclosure? A few mins of every day? BP's are much more active at night than during the day. But I'll check in the morning when I change the water out, and then when I get home, and before I go to bed. And she is always in a different position, indicating she has been moving around.

I would say she utilizes the warm side when she needs to warm up, but since you aren't monitoring her 24/7, you just don't really see it