[giaour]

You would need to have a preexisting trust relationship with the issuer of the NFT. If it was originally minted with a keypair known to belong to the conference organizer or a trusted third party TicketMaster, then it'll probably be honored at the venue. If not, caveat emptor.

[leifg]

So how does this have any advantage over a regular ticket? (Other than “collectibles”)

[giaour]

As a buyer, you could validate the authenticity of a ticket from a reseller, so getting a counterfeit from a scalper wouldn't be a worry. I think that's it, though