Exxon UK Mechanical Engineering Placement Program Face to Face Interview.. in one week time! Advice needed!

Exxonmobil

#1

Hey guys!

I recently received an email from exxonmobil inviting me for a f2f interview in the Fawley refinery for the Mechanical Engineering placement program.
I have been told different stories of what people actually encountered in the interview. Some say its 100% competency based, some say its a mix of technical / CV / personality.
What was your interview experience like?
I feel like its my last chance to secure a placement. How would you prepare if you were me?
any final tips?

Best!