Yeah, a rat's life is not easy, but I have always thought I can't let that stop me.

[If there's one thing Rémy has is determination, yeah]

I'm Rémy, chef in Le Ratatouille. [He sounds very proud about that] Nice to meet you, Louis! I'll see you here in half an hour.

[There he goes, intending to return at the agreed time...without any useful clues besides having talked to other people, which is useful in its own way]