You can just show on that day, see if any one available. Only 2hrs for Frank Lloyd's home & Studio. Might as well tour Unity Temple. Save money walking around Oak Park on your own to see Frank Lloyd Wright houses in neighborhoods.
Pre book would be safer. It is a great tour.
There are a limited number of tickets for each tour, if it is not sold out, yes you can. There are multiple tours each day.
You dont need, there are severeal times to visit for groups. It is possible to visit the house with ticket and audio guide own tour for the neibhourhood. But it is prefered to book on line if you can anyway! Good visit... One of thebest tour un Chicago. Robie house us best too
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