In short: TASSIE DEVILS!!!
In long: This was an educational, scenic, and overall fun tour that's worth exploring. Our tour guide, Nick, was really knowledgeable and friendly, and he added a lot of color to the scenery and history of Tasmania.
The start of the tour included a number of scenic stop-offs and a walk through the Tasman Peninsula, including a number of stunning vistas of the seaside cliffs that made for absolutely wonderful pictures. There were also many horrifying and amusing stories from the history of the Peninsula, including various tales of convict escape attempts, piracy, and other trivia that Nick shared with us throughout the tour.
After that was the unequivocal highlight of the tour: The Unzoo! We watched an Unzoo guide conduct a feeding with one of the Tassie Devils, which was a tad bit gruesome (think Nibbler from Futurama) but also included a number of facts and information about the devils which made the experience educational and interesting. Afterwards, the Unzoo guide held a local bird exhibition which saw our tour group get up close and personal with a number of Tasmania's feathered denizens, and then we were able to wander the grounds and see more devils, pademelons, kangaroos, and wallabies in their natural habitat.
After the Unzoo, we spent a good amount of time in Port Arthur. While I found Port Arthur to be extremely fascinating (and I even found an unexpected family connection), the subject matter covered in Port Arthur, both historic and more recent, upset some of the other members of our group. Nick did a great job of prefacing this part of the tour as being an uncomfortable and important part of Australia's history, but I also understand how some people might not want to spend part of their vacation touring around a very well-preserved prison complex with deep educational dives provided throughout.
Finally, we stopped off in Richmond for a quick breather before heading back to Hobart. We saw Richmond on an earlier tour and enjoyed it, but just be aware that this is the end of the tour and some of the shops close earlier in the day if you wanted to spend time perusing the boutiques and art galleries. Happily, the bar and bakeshop were both still open and we were able to enjoy ourselves.
In summary, this tour was an excellent blend of scenic views, education, and, most importantly, TASSIE DEVILS!!! I would highly recommend this tour to anyone looking for an up close experience with those lovably terrifying creatures. If you want something that focuses on the Tasman Peninsula or Port Arthur, this is still a very good tour for both, but for us, the Unzoo was one of the highlights of our entire trip.