 You have no say in the airline or the routing. They will get you there on time. You can go on the day of embarkation or boarding the ship or one or two days early, but only one or two. You can come right home after disembarkation or stay one or two days. I wish they allowed more, but they don't. Now, here's what people, they love this deal, but they say, well, they booked me on United and I want to fly Delta.