I'm not sure either of you are particularly reading my posts.
E3 is an industry trade show, arguably THE industry trade show. It is not a consumer show like PAX where most of everything there is out and the open and available. A small fraction of the games at E3 are out in the open on the show floor, which are usually dominated by larger publishers and platform holders, and sometimes are only dedicated to
one game of their lineup (see E3 2016, Zelda BotW).
The rest are controlled through - as I said - meeting rooms, closed and semi-closed booths, and theatres. These are done with bookings for appointments with publishers, which is how we even know this information in the first place (a games media person let it slip), and how E3 operates if you are in the games press. If you are unconvinced by me telling you this, go listen to a few pre/during/post E3 gaming podcasts from Giant Bomb or whoever, where they will casually mention booking appointments to see games.
E3 is an industry event first and foremost, and at least in its current form does not do general admissions from the public; relying instead on selling a limited number of what they call "gamer passes" to the event to get onto the show floor + a few bonuses, but does not include the same privileges and access afforded to the press. E3 has only been doing limited admission
since 2015.
Nothing about this is unheard of, it is literally standard operation.
If you have come to spread FUD about nothing, or just be snarky - then please, go find another thread and save us all some valuable time.
