If you have to have an NPC hand out information to the PCs, be stingy about it. There's no point just giving them everything on a silver platter.
Unless of course it's a fake silver platter, coated with contact poison.
Leia: Can you tell me where I am?
Wicket: Certainly. What are you offering in exchange?
Leia: I just gave you food.
Wicket: That's what's called a "sunk cost".
Leia: Let's see. My helmet?
Wicket: Okay, you're on the Endor World of Opportunity and Commerce.
Leia: Is that it? Your information stinks!
Wicket: <sniff> Fair exchange, then.