A bit of poking around the official website yields the following:
Per this link:
Ticketing Page
It says:
CHANGE OF NAME INFORMATION
In case of emergency, you can change the name inserted in the booking at the time of your
purchase up to 24 hours before the date/time of your visit clicking here.
Only one change of name is allowed per ticket starting from 9 days before the time of your visit.
It takes a bit of additional deepdive to find an actual link to do this with, but it appears to be:
Go to this page: FAQ Individual Visitors
Scroll down to "Can I cancel or change a pre-paid booking" and expand. There will be a link
to the general Vivaticket site which appears to give you the option to select the date/time of
your event and change the name of the ticket owner. It's a long link URL so I am not C&P'ing
it here.
Caveat emptor: I have no idea if this will work, I just am pretty good at searching websites. If
it doesn't work, note that they say name changes are allowed starting 9 days before the event,
which is still a couple of weeks away. It appears you can only change tickets up to Sept 14th
as of now. Good luck!
