The Billy Joel concert at Notre Dame Stadium was rescheduled to Saturday, June 25, 2022.
Tickets purchased for the previous date in 2021 will be honored on the rescheduled date. Ticketmaster contacted via email all who purchased tickets with refund options for those unable to attend the new show. Ticket holders had 30 days to respond.
Original press release link. (pre-coronavirus)
Updated information on the 2022 concert, parking and what is and isn't allowed in the stadium: https://gameday.nd.edu/special-events/billy-joel/.