In this comic, Julia Lepetit from Dorkly takes a look at how things were at conventions just a few years ago versus how they are now.
Yep, that pretty much sums it up. My advice: get in as early as possible. Once you reach lunchtime, the con floor is going to be so pact that even people who are not afraid of being trapped in an elevator will start freaking out.
[Source: Dorkly]