We received the same email from West Jet yesterday, except our cruise returns on Friday, Mar. 15th. Not sure that rushing from Miami port to Fort Lauderdale airport during rush hour to catch a noon flight is worth the stress at the end of a vacation. We were told that because it is over a 3 hour flight time change (as is yours), that we could rebook onto the 9.30 flight without penalty. This is also March Break week, so we have to decide soon. We might just request the earliest disembarkation time, walk off with our bags and uber it directly to the airport. Barring a major traffic jam, it should work out. Good luck with your decision.