Pros
If you follow the supervisor's training and development programme, continously ask questions, learn fast and challenge operational decisions by managers, you can go far and grow fast. Seen young leaders developed early and young graduates promoted to managers under 3 years experience. Company leaders are ex SLB and ex Petronas. So it explains why people are pushed to their limits and nurtured for fast career progression. They take best of both worlds and made it unique and better.
Cons
High work volume. Not the place of you want to be paid for what you work for, but only because instead of promoting you, they make you work the job and prove you deliver before giving you a raise. Work can be added out of nowhere, but always this is the reason you gain more knowledge and technical improve yourself. So this is maybe not a con. Salary starts low, but I've seen freshies promoted every 12 months, salary increment 2 times a year. Only if you're a high performer.