Sometimes you just gotta roll with player expectation. Genre savviness is at its best when you can exploit it for dramatic effect. Or just to make the players feel even more paranoid.

Transcript

TT-8L/Y7: Ee lanky woony coopa?
C-3PO: "Are you here for the auction?"
[SFX]: < whir boodoot doosquee fidooby doosquee fidooby whiddle-boppity squee dit >
R2-D2: Yes, certainly we are. We are here for the auction. Let us in.
TT-8L/Y7: Chee cha ka aka kooka. Aye ga.
C-3PO: "Excellent. Please enter our otherwise secure fortress."
GM: That wasn't on the note.
C-3PO: Okay. "Please leave your weapons at the entrance."
[SFX]: < doop buzz boop whroop doop eevoo bang pow beep bedoop >
R2-D2: I have no weapons. I am but a humble astromech droid.
{they enter}
C-3PO: It's like a dungeon in here.
R2-D2: If it was a proper dungeon the door would have slammed shut behind us.
[SFX]: Slam!