Yup. It's fairly normal and is how the airflow works in this and most case designs. Although in this particular case they use an upward intake instead of a side intake(s) but the case is ready for water cooling with the space for three fans and a radiator on the top panel. I found the cooling to be adequate without fans in the top panel.
Thanks so much for your help mate.

I know what i've asked in this thread is off topic but I did make a thread for these questions in Case Central but got no decent answers.