A good checkflight should be a fun learning experience for you. A chance to hone your skills, get a few tips and ask any questions that you have not been certain about.
If it becomes confrontational then you picked the wrong instructor. The worst that should happen is you get asked to do it again with some practice.
It is also probably the only time people ever practice PFLs and just about everyone messes up their first one.
If you are coming from a different environment let the instructor know. They will usually have come across American/SA/Aus pilots before and its not usually a problem.
The instructor is usually 90% certain of the outcome of the flight by the time you get to the hold.
Have fun.