Beventi added a flow where readers can buy event tickets and pre-order the featured book in one transaction - fewer separate links and less "did you preorder?" confusion at the door.
If you're the indie handling events or an author touring with tight inventory, that kind of bundling cuts admin work and makes it easier to match attendance to orders. It's the sort of small-shop tooling that only matters when you've been juggling Eventbrite, POS, and hand-typed spreadsheets at midnight.
(Shortened and summarised to avoid devaluing the source)