Thank you @thatchronicfeeling, this was helpful. I hadn’t thought about the entry queue; it’s usually quite long after advanced ticket entry (which we do have, thankfully). They had a seating area near the food stales last year so I’m hoping they’ll do something similar this year. I’ll keep an eye out for a map, sometimes they release it early so you get an idea of what there’ll be in the sellers halls. There are plenty of toilets as well and they have pretty big signs above them so I shouldn’t have any trouble finding one.

I highly recommend going to comic con if you can. The London one is huge; it takes up almost all of the London ExCel centre (which is a massive building), and is over three days now. I got my Totoro keyring from there a few years ago.