You'll have to add TITLES to the picture if you want them to see notes. Markers won't pop up...won't transfer in any way...in an exported file.
What I do I provide timecodes and then my notes. "Here I want the Music to crescendo! Here I want the music to hit, then fall to a low drone, then slowly build." And I always ask them to refer to the temp mix....because I used it for a reason.