Back home the local football club would sometimes give priority to e.g. people who could show at least 2 ticket stubs. Of course they could do that because they were the sole issuer of their tickets, it would be much harder for an entity that sells tickets through multiple channels.
It would also unlock new ways to connect with audiences. For example, if your wallet holds 3 or more NFTs from this venue/director/band, you get early access to purchase tickets for future events.