If you are awarded a meet and greet, you will receive an email notification the week of the show.
The number of people applying for meet and greets who are actually chosen varies greatly depending on the number of members who request one for each particular show.
You will get an email if you get one, not sure how early prior to the show. If you need to verify you signed up for one just go to your profile and you can view your M&G requests.
how do you know if you got it