You will be given exact times nearer your departure time but all Barbados flights usually leave between around 0830 and 1000hrs arriving in Barbados mid afternoon. Its about a 10hr flight. On arrival you will be met on the tarmac by a fleet of minibuses to take you to the ship, which takes around 45mins. You do not go through immigration or collect your luggage. Your luggage follows on and arrives in your cabin later. There will be several aircraft arriving from various airports around the same time. You should have details of the cruise in your brochure or on the P&O website