Trouble is, as the wine flows, you tend to look out the window less and less...
We loved the experience. The ride was stable, and the food was certainly good enough. But being Melbourne born, we love our old trams. People from o/s might have a different view. Then again, how many people can boast about eating on a moving restaurant ? Or eating an animal that appears on your countries coat of arms ?
If you get the chance, do it. It's quite a unique experience, and doesn't go for that long. We did the early night meal, but you may prefer the lunch to see more. Or if you do stuff during the day, the late dinner (8.35pm departure) means you won't eat into your schedule.
There is also a free tourist tram that runs around a loop of the city. It's ok for tourists, I guess.