Miami is a beautiful city, was just see the tourist side of things. Traffic is a pain but still a beautiful city. We took a carnival cruise a while back. I was looking a the map and it seemed to take us under the water, and what do you know, we actually did drive under the water to get to the cruise terminals. First time for me driving in a tunnel under water. The ticket line was a bit of a mess to get into the facility but it was worth it. Haven’t been back yet but most definitely will one day.

Carnival Cruise website here