I've been using Airtable to run Demuxed (decently sized video conference for people that work in video[1]) since ~2016 and my interest is definitely piqued. We do talk submission, anonymized selection processes, reviews, sponsor management, everything. We've built some custom UIs around things like the talk review process and the API is workable, but things like types would have been a god send.

I was a little taken aback when I went to sign up for the free trial and got hit by a Stripe checkout, though. Yes, checkout was for £0.00, but still, it was enough to make me close the tab at that point. This project is interesting but probably still a long shot for our workflows, so that (admittedly fairly low) barrier was a blocker.

Best of luck!

[1] https://2022.demuxed.com (last year's conference site)