Is there any way of adding a line to the email the purchaser gets as a way of receipt once they've purchased the tickets? We want our receipt to say something like: Hold or print your receipt for your ticket(s) because no physical ticket(s) will be sent.
We just don't want the attendees waiting around for a ticket thinking they're lost in the mail since we're using their name tag as evidence of payment.

There is a place for "Directions" on the Reunion Planner. It has this hint: "If you wish to display directions to your Reunion enter them here: "

You could use this field, but I don't know if it prints on the receipt or if you just need to tell them in this "Directions" field to keep their e-mail as their receipt because there will be no physical tickets being sent.