Hey guys! This is my first year going: any advice on what NOT to do? We got our hotel and plane tickets but what are something you’ve learned from going to SDCC?
What NOT to do... ignore this site in the days leading up to the con.

I know, that sounds facetious, but there really is a lot of good information here, and you may find out about things of which you would not have been aware otherwise.
You're likely to get a lot of advice such as 'Don't miss ***' or 'Make sure you do ***' or 'Don't overplan' or 'Don't underplan'... these are difficult things, because every person is different and has a different approach to the con. One thing about SDCC (at least, the pre-COVID version) is that there is SO much to do that if you miss out on something, you will find something else to do. Even just walking around can lead to so many interesting experiences. Really, the only thing you can do wrong is stay in your hotel room.