Sounds like you've gotten some good advise.

When's the wedding and have you partner danced together before?

I agree that the music is way too long. Think about having it reduced to under 3 minutes at a sound studio. The next step is to structure the peak and lift, with a few twirls leading up to that. And, yes, you'll need good shoes and time rehearsing.

Wow, super difficult song. However there are some good suggestions from other posters. I will caution you not to expect twirls and spins. First, they are harder than they look. New dancers have a hard time mastering them without falling over. Second, will you be able to turn in your dress and shoes? Most brides pick very high heeled shoes that they are not use to and are totally wrong for dancing. Do not confuse dance shoes with street shoes. Dance shoes are constructed completely different with suede soles. Chances are your dress will be too long. Keep your wedding dance length under 2 minutes. Ideally, a minute and a half is enough. You'll be amazed how long that seems when you are dancing. Also, any longer and your guests will get bored. Have the DJ fade the song out at a good spot in the music. Get a simple choreographed routine and keep your heads up. We had one couple at our studio where the woman kept her shoulders up by her ears and her elbows and head down. She looked like a vulture. No amount of instruction could fix her. Her video must have been cringe-worthy.

American Rumba! And as others have said, keep it short!

This song doesn't fit a typical ballroom music. If your priority is the music, then you'd have to find a dance to sort of fit the music. If your priority is the dance, then pick a dance style first and find a music to fit, which would be alot easier.

If you can dance on the beat, and can dance a basic step or two of some known style, you're already better than 99% of the wedding couples.