@robertlinke
In case you are not aware, we will probably encounter the new multiplayer bug discussed here: Mutli-player Stuttering after world update - Bug report.
I experienced this bug in a multiplayer flight yesterday which caused the event to be cancelled soon after it began.
The only way to avoid the problem that I can see is to ask everyone to use only Asobo aircraft ( no mods) with standard liveries.
Is this something we need to determine before we start?