Does it matter which party members I will take to the Sapphire Ridge?

[Havearrow]

LIke, is there unique dialogues if you take Emily/Apollo, or C'tron/Apollo, or Joern with anyone?

[Aegix Drakan]

Possibly?

I do recommend taking Emilienator with you though. VERY early on there's a real funny thing that's unique to her. :P

[Merim]

Far as I know, Emile has more dialogues if you bring her in early in the game. Lots of funny moments. I believe theres some for C'tron too, which involves Emile's fear of bugs if you enter in some caves full of spiders.

[Emerald Lance]

Emilie tends to have dialogue with Apollo fairly often, though I don't know about Sapphire Ridge in particular.