My wife and I went on the 2pm Downtown tour on a Friday in mid-August.
Stops were Poogan's Smokehouse (sweet cornbread, pulled pork sandwiches, pimiento cheese balls), Craftsman Kitchen and Taphouse (Asian pork sandwich, fried potato slice, and Mexican street corn), Oyster House (praline hushpuppies, shrimp with grits, she-crab soup), and Kaminsky's (pecan pie).
A good introduction to southern food with lots of variety. Everything was really good. Portion sizes were adequate if not generous. The (sauceless) pulled pork sandwich and the she-crab soup were the highlights for us.
Dustin was a personable, knowledgeable guide with a somewhat wry sense of humor, which we like. He answered all questions and pulled up photos on his phone to illustrate historical anecdotes. He did a good job.
As for the negatives, one was the additional charges. We paid $13.10 for a beer flight at the taphouse and $6 for an espresso martini at Kaminsky's. We've been on numerous food tours all over the US and Europe and, although the total price of this food tour with optional add-ons is comparable to any other food tour we've been on, we prefer the "all-inclusive" setup when we've had that.
The second negative was the size of the group. There were (I think) 16 of us. Not huge by any means, but it meant we had to be seated at multiple tables (Poogan's and Kaminsky's) or at one long one (everywhere else). Add to that the ambient noise in the restaurants and it was sometimes almost impossible to hear Dustin speak, even when he was just a notch below yelling (the taphouse). Service at several stops was quite slow as well.
Duration was slightly longer than advertised...we were finished at 5pm instead of 4:30 (3 hours vs. 2.5), but that's not a bad thing since we took our time.
Overall a solid tour with lots of good food.