Mike Green

We have a 3 week cruise on 10 March, followed by a 2 week cruise ending 13 April. Unfortunately something has happened resulting in us being unable to go. P&O have said that despite it being short notice they would be prepared to transfer the names on the cruise to new names. So we are wondering about trying to sell/transfer it. So my question is, does anyone know how best to advertise this and where? Thank you.