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Note that family weekend usually conflicts with the last week of rehearsals in the Fall.
httphttps://cac-ems2.mit.edu/virtualemsEmsWebApp/login.aspx
After the initial opening period, you can reserve rooms whenever you want.
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Record rooms when you've requested them, since they won't be recorded anywhere else except your e-mail. You can choose to use a spreadsheet or the google calendar, there is a special calendar called "room reservations".
Reserve rooms: httphttps://webclassrooms.mit.edu/registrar/classrooms/reserve/stds/index.html
Special Reservations
Summer Reservations can be attempted a few weeks in advance of the "Opening of the Books."
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