Doris, in the past I've just called the airline where I have points and speak with whomever answers. I know with USAir, you cannot do award travel online when it is not a true RT, say if you are on a cruise starting one place, and returning from another.
🚢 Cruise with your favorite Keene Luxury Travel Staff Member! 💰 5% KLT Reward plus Shipboard Credit available (amount varies per voyage)! 💲 Offering Enhanced KLT Rewards on voyages hosted by Ngaire & Clay!