My Dad (84) and I (43) had a great father/son cruise onboard the Adventure! My Dad stayed for almost a week at the Fountainbleau in Miami, and I joined him for the last couple of days. This was a very nice hotel, but I'd be happier spending half as much and staying more toward South Beach in a boutique hotel that includes breakfast (such as the Shepley, where we stayed last year).
On embarkation morning, we left Miami and took a Lyft to Port Everglades. The ride ran about $37 including tip, which was quite reasonable. If you have a cruise out of Ft. Lauderdale, but are considering staying in Miami, don't let the distance bother you. We arrived at the terminal at around 10:30, and I think we were on the ship before 11. We had a brief wait while the ship was still being cleared, but once they started calling groups, it was pretty easy to get everyone onboard, as there were only a few hundred early birds.
We most recently cruised on the Carnival Magic in October, which was a cruise we also enjoyed. The most noticeable difference between the appearance of the ships was the large amount of rust and lack of cleaning in some areas on the Magic, while the Adventure was kept much better. We didn't let this affect the enjoyment of our Magic cruise, but I just wanted to point out the difference in maintenance. I won't drone on about the ship itself, as it is easy enough to find information about the ship's facilities. I will say that even though this ship is a bit older than any of the Oasis class ships, there is still plenty to do.
Decent room, nothing special or out of the ordinary. This is the closest balcony to the front of the ship on this deck, so the bottom of the balcony wall was metal with glass windows instead of full glass. Even though it was far to the front, it was still a fairly short walk to the front stairs.