(CNN)As the Grand Celebration cruise ship sailed away from the Bahamas on a humanitarian mission carrying nearly 1,500 hurricane evacuees, Ceva Seymour looked back at the hundreds of desperate Bahamians left behind at Freeport Harbour. "It was difficult for me to see that other people couldn't get on the ship who probably needed to be there more than me," Seymour, 56, said after arriving in Florida with more than a dozen of her cousins and grandchildren. Seymour, her relatives and all those who stayed behind are among the 70,000 people thrust into homelessness on Grand Bahama and the Abaco Islands...