My two cents worth:
I've tried a couple of times to arrange for parties of 15-20 for lunch (which is considerably different than dinner at any eatery anywhere). Both events were in mid-February, so TV was full!
Cane Garden wouldn't even consider a reservation. They worked hard to accommodate my party, but we were all over the place! Okay, but not what I'd have liked!
Mallory Hill was happy to take a reservation, and did not force us to all be there together before seating us. Tables of eight next to each other. Very satisfied!
The food has never been gourmet at either place, but it has never been awful/bad/horrible either!
I've also been a member of "large" parties at Glenview (barely acceptable), Palmer Legend (lots of confusion), and Lopez Legacy (totally worth the higher prices).
SWR