I volunteer at a weekly event where we consistently have over 400 people show up, and every week it is a struggle to get 20 necessary volunteers to run it.
When you ask, you do get volunteers, but there are a few awesome people who volunteer every week and love it. The event would absolutely be impossible without them.
Thank you to every person who volunteers, especially if you do it without asking.
Fusion Festival offers a free guaranteed ticket and free meals to anyone who's willing to sacrifice 3x7 hours of their time across the 6-day event doing menial work. Despite this they still apparently get fewer volunteers than they'd like.