Is there a way to 'turn this situation to our advantage'? [=is there a way to exploit this situation?; is there a way to take advantage of this situation?]
The union should be 'at an advantage' [=should have an advantage] in the negotiations.
She used her position for personal 'advantage'. [=for personal gain; to help herself]
(..) What's so interesting? You're left-handed, Mr Ewell. What's that got to do with it,Judge? I'm a God-fearin' man. That Atticus Finch, he's tryin' to take advantage of me! You got to watch tricky lawyers like Atticus Finch! Quiet! Quiet, sir. Now the witness may take his seat. (..)1962 To Kill a Mockingbird
(..) She was pretty well beat up. I asked her ifTom Robinson beat her like that. She said yes, he had. I asked if he'd taken advantage of her. She said yes, he did. That's all there was to it. Thankyou. Did anybody call a doctor, Sheriff? (..)1962 To Kill a Mockingbird