Additional Attendee Services

Email Address Used to Register:

Registration Confirmation Number:

Cancellation and Refund Policy

  • Refunds will be given only if written notification is received on or before March 13, 2019.
  • All refunds are subject to a $100 processing fee.
  • Telephone cancellations will not be accepted. Please email cancellations to
  • NO REFUNDS will be given after March 13, 2019.
  • Registration fees are not transferable to another attendee or meeting.
  • Registration refunds will be processed 30 days after the conclusion of the meeting.
  • Cancelling your registration does not automatically cancel your hotel reservation. To cancel your hotel reservation, please contact
Visa Information

In most cases, citizens of foreign countries will need a visa to enter the United States. It may take up to three months to obtain a visa. For additional information, please visit the U.S. Department of State - U.S. Visa page. You must be registered and paid in full before you will be sent a visa letter of invitation.

Special Assistance

ASTRO is committed to making the 2019 ASTRO Annual Refresher Course accessible to all individuals. If you have a disability as identified in the Americans with Disabilities Act, please contact us at 1-800-541-6058 or