Hey Lindsay,
Thanks for reaching out to us!
Unfortunately this isn’t something that can be accomplished out of the box. Would need some customization and the direction chosen would depend on all the features needed for this particular feature.
The simplest approach though would be to use new meta for the event (using ACF for ease) to collect the venue information for the event and then only send that to users when they purchase (rather than displaying on the page).
I’m sorry I wasn’t able to give you a direct answer here but hopefully this will help to get you pointed in the right direction.
Thanks!