I bought the Sisi ticket online to go to Schonnbrunn and the Imperial Apartments. I like to have my tickets physically with me ahead of time because it makes one less thing I have to do when I'm there. I just had to print out the ticket that they sent so it was easy just to add to my folder.
I also have to get the Kunsthistorisches/Imperial Treasury combo ticket. I can't tell from the website if they physically send tickets or if I can just print them out. Has anybody got this combo ticket online? If so, I'd like to know in what form you get them. I don't want physical tickets sent because that would cost extra, and that's not worth it. If it's physical tickets, I could just wait until I get to Vienna to buy them.