Private pilot ride
I'll give it to you from my point of view as an ex-ERAU stage check pilot who gave final stage checks for the Private certificate.
Standard procedure was to plan a cross-country. We'd really go through the PTS from beginning to end, asking about Private privileges and limitations, medical certificates, being able to charge for a flight versus sharing expenses. We'd discuss ARROW, required equipment for day and night, discuss whether the POH students bought in the bookstore counted as the aircraft's POH. We'd pull out the sectional on which the x-c was planned and go over airspace (I'd have them plan an x-c through a MOA and discuss communications requirements). We'd discuss weather, NOTAMs, the A/FD, etc.
Flight consisted of departing via normal takeoff on the cross-country, diversion, and then starting back on the field. I'd put them under the hood briefly while tracking to a VOR with some climbs, descents and turns to headings. Airwork would be constant-altitude turns, MCA, and the stalls. On the way back I'd "pull" the engine for a high-altitude emergency. At low altitude, ground reference maneuvers of turns around a point and S-turns down a road. Back to the field for shorts and softs with a go-around thrown in along the way, takeoff emergencies including aborted takeoff, engine failure after takeoff (observing to see that the examinee established best glide and looked for an open area; not turning back) pattern emergencies in which they'd lose the engine just before turning base (I wanted to see them go for the threshold) and a no-flap landing.
We had to test for everything at Riddle per the stage check sheet, but I didn't make examinees fly retangular courses because I could tell from pattern work if they knew how to correct for wind drift. This flight turned out to be a very thorough flight, and ran something like 1.7 on the average.
Not many examiners will be as thorough as an ERAU stage check. I never had an FAA practical that was as thorough as a Riddle stage check. Hopefully, this gives you some idea of what to expect on your ride.
Just be as well prepared as possible. Your instructor, if he/she is doing his/her job, should ensure that you're flying stricter than the PTS standards before sending you to the examiner to allow for nerves during the flight. Good luck with your practical.