More than 70 percent of those booked to come to this year's TT, have transferred to 2021.
According to the latest figures from the Steam Packet company demand for new deposit bookings for next year was high when reservations opened on Monday.
Additional staff were drafted in to help handle an calls and the website - with 2,374 bookings processed throughout the day.
As of midnight on Tuesday, more than 24,000 passengers and close to 12,000 motorcycles are booked to travel to the Isle of Man for the festival fortnight 2021.
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