Good news! Before Wednesday, Sep 18th, 2024 at midnight local hotel time (in Chicago), you may cancel your reservation for a full refund. Between Wednesday, Sep 18th, 2024 at midnight and Thursday, Sep 19th, 2024 at midnight local hotel time (in Chicago), you are not allowed to change or cancel your reservation. If you cancel your reservation between Sep 18 and Sep 19, you will still be charged for the full amount. After Thursday, Sep 19th, 2024 at midnight local hotel time (in Chicago), you are not allowed to change or cancel your reservation. If you cancel your reservation after Sep 19, you will still be charged for the full amount.