How do I cancel my registration?
Visit your registration and expand section 3 "Payment". If you are within the cancellation period, you should see a button in the payment section to cancel and refund your ticket. Refunds take about 10 business days to appear on your statement.
See the dates link on the home page for the cancelation deadline for the current meeting. If you cancel your registration when the meeting is sold out, your ticket becomes part of the reserve pool of tickets and you likely will not be able to re-register.