>>91917338most of it is just about waiting in lines to get in.
then waiting in lines to cordially take a photo of a signed wall.
and maybe waiting in more lines for merch pickup.
there are cosplayers you can take pictures with if you line up (the animegao kigurumi were pretty fun)
if you're tired of waiting in line you can go sit and watch the main stream
the most memorable part for me was watching audience participation live:
https://www.youtube.com/watch?v=KHAIu2PFBnshoshiyomis are funny as fuck.
PROTIP: line up and grab a ticket number immediately at the start of the day for all the booths you care about or 90% of the good stuff will be unavailable to you. they are all timed entry. nobody explained this to me so my expo day was kind of wasted last year.