I've been to Luther's a dozen times or more because my teenager likes to sing Karaoke and I don't want to drag him to bars. Plus, I am a student, and it's close to San Antonio college.
I've had a wide range of experiences there concerning staff / service. I have dealt with some snotty servers (mostly female, oddly enough) and some great ones who fawn all over you to make you happy. It just depends, but I have also had no qualms with showing up and making it clear I did NOT want a certain server, and I've always been accommodated.
The food is good, but a little overpriced. You do get a lot for the money though, and I've learned to SHARE a burger now rather than trying to eat it all by myself. Love the tater tots.. love the sweet potato fries.. and if you order a steak with the sauteed spinach! Wow. That spinach is delicious and evil. Probably far too butter laden to ever be considered a "vegetable' anymore but yum! Portions for a steak dinner were small though. Stick with a burger, if you're hungry.
I am not exactly a mixed drink expert but love their pomegranate mojitos, and the atmosphere can be fun. Good late night option to people watch too. My mother calls it "that gay place" but it's clearly not.. however, it is an accepting atmosphere and we are a same sex couple with kids, so that counts for quite a bit, because we can go as a family and feel welcomed and have fun.