I've eaten there about 4 times I think.
I agree, the servers really are usually great about picking up on the tone of your party. My DH isn't really into the whole "shtick" of goofing around, so they were pretty mellow (but we found it cool that our "cousin" was from an area in Kansas City that my DH grew up in one trip).
They are very flexible and helpful; once, I was with my best girlfriend and all of our kids (husbands had to stay home and work!). She's got 4 boys, two the same age as my kids and then twins a year younger (yes, she has 4 kids within 3 years!). Her twins are apraxic, and can now speak at 10 but at 6 barely could speak, and they've had lots of hurdles to overcome. It was their birthday the month before, but she asked if we could sing for them. They were given cupcakes with sprinkles and we sang to them, and it was so sweet.
I'm not too into the whole country fried foods or what I grew up eating (meat loaf, pot roast, etc... as I grew up in the late 60's and 70's in the Midwest), but, everything I've eaten there is honestly EXCELLENT! My friend and I shared the fried chicken (one piece is plenty for me), and they even brought two separate plates, and we each got side dishes as well, and there was no extra charge. The kids must have loved whatever they ate.
The decor is very cute, especially for folks my age (over 40) as I recall so much of that in my grandparents' houses, and my mom's older stuff too.
I think if you're really looking for the whole experience, I would tell them that you want someone who's really into it when you check in. Otherwise, if you're not, I do agree they pick up on that.
One day, my kids and I ducked in to escape a huge downpour that had just started. It was late afternoon, so I got a glass of wine at the bar, and my kids the glow cube drinks. We were given the menu and ate right there at the bar. That was nice, as we didn't have any ADR's and they were booked up.