I went to the theater over Winter Break to buy tickets in advance and they said that when the previews start Feb 14 they will post their rush policy on their site. But yes there will be one I'm just not so sure if it will apply to all seats or a specific section (I'm hoping that I can buy the tickets this way for March Spring Break!) Glad I could help.
Hey. I just got tickets through my school for Wednesday February 2nd at 8PM. It is Row D, Rear Mezzanine, and the 3rd section (the center one). Are those alright seats? I have only been in the orchestra of the Imperial. Thanks.