There is nothing wrong with puns. A play with words, he's allowed, as a relaxation. And also to annoy Noct (he's trying not to appear old...). But, indeed, if Noct is somewhere in the crowd, Ignis will not have a hard time spotting him.

Ignis pauses and frowns, "...odd. It has been a long battle, indeed, but I was in the middle of it before I ended up here..." He got knocked out and woke up when he got dropped in the lake. Not very pleasant. And he's not sure whether to feel relieved that things ended well (from the sound of it) or the fact that Cor is talking about future events.