Badges for Comic-Con International 2025 reportedly sold out yesterday morning in under two hours. It took a little longer than it has in some past years but that's almost certainly a function of the software and computer delays, not a diminished demand.
Naturally, a lot of folks who didn't get what they wanted are complaining but that's what happens when you have an event that is that popular. There are a zillion-and-a-half fan conventions out there but I don't know of a single one that sells out that quickly…and without even announcing a single guest or event.
I have nothing to suggest for those who were disappointed except that in early December, it will be possible — and a lot easier — to get badges for WonderCon Anaheim, which takes place March 28-30 at the Anaheim Convention Center. It's run by the same folks who run its big brother in San Diego and while it's smaller, there's still more than enough there to see, do and purchase.
A lot of folks who go to Comic-Con in San Diego only see about a tenth of the exhibit hall. Well, the WonderCon exhibit hall is a lot bigger than a tenth of the San Diego exhibit hall and there are plenty of programs and cosplayers and the parking is just as bad. I expect to be at both of these conventions next year and probably no others.