I have updated the attendee list and I have booked the Hilton INN for the DO weekend.
I reserved a room at the Hilton Innsbruck.
My tentative plans are:
Fly AUS-VIE.
2-3 days in Vienna.
2-3 days in Croatia (I have a friend who lives in Split)
INN Do
Return to AUS, either out of VIE or MUC depending on airfares.