WonderCon will be held March 24-26 at the Anaheim Convention Center. They're just starting to announce their guests and, lo and behold, I am one of them. For reasons we all understand, I have not been to a WonderCon since 2019 and I'm hoping no disease prevents this one from taking place or me being there for it.
It's always been a great convention if you can deal with the Disneyland traffic, which is rarely as bad as I expect. A lot of folks plan a trip that includes both WonderCon and Disneyland. The proximity to Disneyland is also nice in that there are plenty of places to stay and plenty of great places to dine.
Badges are still available for WonderCon. If you can't get in to Comic-Con in San Diego, this is a good alternative. It's run by the same folks and features many of the same panels and exhibitors. It also usually has one of the most impressive turnouts of cosplayers if that's a selling point for you.
In fact, badges are not only available, the 3-Day ones are on sale until January 8. So if you want to go for all three days, you want to order in the next four days. Consider doing this.