How can I get outside the city gate?

Hint 1 of 13:

As the guards have told you, you need a gate pass to get through the gate.

Hint 2 of 13:

Try talking to the little (scared) guy in the bar.  He has some information
on a gate pass.

Hint 3 of 13:

Oh well, a ghost stole his gate pass.

Hint 4 of 13:

I guess that means you can't get it yourself, unless you're the ghost, that
is.

Hint 5 of 13:

You'll need to find a ghost disguise.