Okay, I’m going to take the unpopular opinion here.
People who log in and go AFK to wait for an event to start have earned the right to be there.
Anything you need to explore or do etc can be done in the overflow and if you’re looking to join the event, then just plan ahead.
You don’t see people who wait in line to go on a rollercoaster getting flak. They got there to own that spot early, so be it. It sounds a bit harsh but hey getting there earlier is easier than forcing ArenaNet to spread resources on something people will just work around, rather than interesting new content.