Be cognizant of who you are demonstrating to, with respect to age groups and corresponding culture and language norms: Traditionalists vs. Baby Boomers vs. Gen X vs. Millennials.
Your specific language and style may appeal more (or less) to specific groups, preferentially. Similarly, use of specific technology and tools may also impact your results, in accord with which groups are in your audience.
While this may be a challenge in face-to-face demos, it can be even more difficult with Remote Demos. After all, you can’t typically ask everyone to state their age over the phone…! You can, however, listen carefully for verbal clues as to your audience’s age groupings.