I was told to keep the pax brief limited to: operating the hatches and harnesses, the location of the fire extinguisher and first aid kit, and how to adjust the seat. But on test, my examiner said he was familiar with the aircraft and wouldn't require a brief.
What he did ask for was a take-off emergency brief, in which I explained what my actions would be if I had an engine failure on the ground roll, just after lift-off, etc.
Best of luck on your test!!
