If you already registered for MIR 2020, you can keep your spot. See email that was sent out on March 31, 2020.
Filling in the registration form and submitting the information does not guarantee that you will be able to participate in the Rally, nor does it guarantee the room type you select for the accommodation at the hotel. Participation and room types are both subject to availability at the time of submitting the form. A manual confirmation will be sent, once the registration has been processed.