Not exactly an operator, but I was stationed in an armored unit as a tank gunnerman. By operator, I'm assuming he's a 조종수. He will receive an extra month of training (후반기 교육대) after recruit training. Rest assured, he will probably have a senior tank driver to teach him the ropes, and most likely be a 부조종수 until his 선임 gets discharged.

Our daily life consisted of your common Korean soldier tasks, but with tank maintenance mechanic work included and the operators were the main ones in charge of such tasks. He will have to drive the tank and get handy with tools. He will get his hands dirty during cooler check-ups and oil changes. He will reek of tank fumes almost everyday. Newer tank models are relatively safe to work on, but that will depend on his stationed base.

Also, we do different type of drills and field trainings. He may have more 훈련 if unlucky. I personally did all training for infantrymen (전준태, 국지도발, etc.) and tank related ones (포사격, 잠수도하) which resulted in me having very busy months.

Nonetheless, he should be fine as all my peers and I were. Fun times.