Hiya, Pilar!
Welcome to planDisney. How exciting that you are planning a land and sea Disney adventure! Our family has one coming up ourselves, and it's such a wonderful way to enjoy the best of both worlds of Disney magic.
Pilar, yes you most certainly can use your
MagicBand+ for the entirety of your Disney vacation. This means for both of your
Walt Disney World Resort stays and the
Disney Cruise Line. They call them Disney Bands on the cruise, but it is the same thing. You can connect your MagicBand+ to your
My Disney Experience account. Because this is tied to you, not your reservation numbers, as long as your MagicBand+ is connected there it should work for all three.
One thing to note, Pilar, is that you may need to stop by the Front Desk on the first day to double check it is connected. Sometimes, even though the MagicBand+ is connected to your account, it needs an extra bit of pixie dust to ensure it works for opening your room door and charging. But that takes only a minute and is usually fixed quickly. You can also stop by Guest Services in the parks or the concierge on the cruise and they should be able to fix it for you.
I hope this helps you, Pilar! Have fun and enjoy the most magical adventures on land and sea!
See ya real soon!
Keri