Thanks to everyone for swift and positive response. This helps us a lot with the program.
I'm now confirming the time and date to be the original Saturday 16th of April, 7PM/19:00 EVE time, because it seems to be fine for a number of players and allows the organizing committee to go forward with the preparations. My deepest apologies for everyone who cannot make it. I hope we can celebrate together on the Federation day.
The original post was made to check the timing and to find out whether other role-players might be interested to show up or should the program be targeted to the local travellers. The official announcement and invitations are now underway. Feel free to remind me to send an invitation either here, in IGS or in-game.
Addendum:
To answer some concerns, I want to add that this is really supposed to be what it sounds like. We have no credibility to loose and I think it's really vital for us as a political party to establish positive diplomatic ties to other groups on this stage.