Just ran it. Fun overall, though the dragon was a little meh, and yes, getting the traps invovled is key, and can really bring the hurt (though was tricky for me as the party was good at getting out of the various chambers).
Also, this is one of the false endings that seem to be so much loved in these early adventures. The real badasses are in the inner sanctum, and they can quickly bring the hurt. If the pcs have a tough encounter then waltz into the sanctum expecting a reward...its TPK time.
Edit: bring the hurt? twice? Oh well.