Then Leave? No one is holding a gun to your head telling you that you have to play this game. Who cares if it's 4 PM what does that have to do with anything? Do you want it to go live and have events not working? Items not working? So you could come and complain over that too?
I've been here since the Attack on Titan events and support has always taken care of my problem within 24 hours. You are turning this into a much bigger problem than it needs to be.
They will Launch once they are bug tested and everything is working.
I was ready to say something similar. At least give them a chance before you start trash talking them. No ETA is a bit weird for me, but if the game works, is maintained and moderated appropriately, etc... Then waiting until 11AM/12PM or so isn't so bad at all.
Trust me, if you've ever seen an ArcheAge maintenance go wrong, you have learned to be patient. I once waited a few DAYS to get back ingame after a minute patch.