This is an excellent post on harvest-related terminology from LENNDEVOURS.
Harvest is a great time to educate your visitors about how you make what ends up in the bottle. Remember, most people don't know about all the various steps that you must take to make a great wine and the pitfalls that await (for example, heat from fermentation can kill the yeasts that make it happen).
Does anyone know of a harvest flowchart (with appropriate branches for reds and whites)? Leave a comment.