I wish I knew. I think they both look so exciting. Hope you get to take advantage of one or both of these amazing cruises!
Awesome! Which one are you doing?
We want to do an Alaskan cruise in 2018 so we booked a placeholder while on board. Will be watching for 2nd half 2018 so I can convert that to a sailing date.
Congrats! Key West is my happy placeTo which ship are you expanding? I just took my first trip on the Magic after 5 cruises on the Dream, and now I am in love with the Magic as well.
Just booked 5-night Bahamian on the Magic in March (2017), with a stop at Key West, and I am so excited about it!
We are doing Alaska in June of '17 on NCL. I have the Fantasy booked for a Western Caribbean next Thanksgiving, and am trying to stop myself from booking 2018 until we get back from Disney World in December...I am really leaning towards a Marvel cruise though! Self control is so difficult 
Congrats! Key West is my happy place
I'm glad that I booked the March 2017 trip before my hubby found out about Marvel day at sea, since they leave from NY (which is where we live). I wouldn't mind it, necessarily, but our most recent cruise was to Canada out of NY, so Marvel would mean repeating it, which I would love to do, just not so soon. I'm sure it will continue to be a "thing", so if they have them in 2019, I'd be happy to go back to Canada and Marvel. I'd be much more enthusiastic about it if I thought they'd provide Chris Evans in the Cap suit.
And I want to see how Old Key West, our DVC home resort, stacks up against the original!
Make sure to eat lots of yummy food! There is a conch fritter stand near the aquarium which is very close to the pier..and they have some of the best conch fritters in Key West! I swear I eat during 90% of my time on that rock.lol
7-night Eastern Caribbean on the Fantasy
Fantasy.
<dancing banana>