I go on adventures every night. I always wake up feeling like I've been very busy in dreams. I don't normally recall them well, or in great detail. I'm not always lucid in dreams. I move instinctively and my dreams influence my instincts and guide me in life.
The Dreamtime is not limited by space or time, so the dream body can dream as much as it wants/needs while the physical body rests.
It is true that the physical body can be active in different ways while dreaming, but I'm no expert on that.