By public transport: From Vienna, take the S3, departing from Wein Hauptbahnhof at 10:02 (Zug #29389) to Liesing. From Liesing, bus 256 to Perchtoldsdorf Marktplatz, arriving at 10.32. (You will likely need to purchase a bus ticket.)
To return, we can either return the same way or walk a bit further to Rodaun and take the 60 tram to Hietzing U4, depending on weather.
If you choose to drive, please meet up with the group at the bus stop, just below the church and tower at the end of the Marktplatz, 10:32.
REMEMBER THAT THE CLOCKS ARE GOING FORWARD OVERNIGHT...