As I cannot go to the TT this year, I phoned to cancel my booking, and was quite prepared to lose my £40 deposit.  A nice guy from the Steam Packet said he could transfer my booking to the MGP, without any loss of deposit or transfer fee, brilliant !  After all the stories we hear about the SP, I was well impressed with the service I received.  Now looking forward to the Classic TT on my bike this year, having always been by car before.