Long story short, we hadn't planned to go there, but ended up eating there with 2 babies when we met up with friends at DHS during our trip last month. Our daughter was 14.5 months and theirs was 11 months. They put us in a regular car and set up high chairs to the side of the car, facing us, for each of our rows.
What I found awkward was that the babies can't really eat off the table and there are no trays on the high chairs, so I'd plan around that. We ended up running out to the stroller and grabbing our daughter's snack cup and having her eat from that and also suck down a baby food pouch. Our friends spoon-fed their daughter. Both worked fine, but she usually self-feeds off her placemat, so that was different.
Also, maybe our waitress was just super awesome, but it ended up being a very kid-friendly meal and good experience. Our friends knew their daughter was hungry and ordered an entrée right away that had mashed potatoes as a side - just to feed her. The waitress understood what they actually wanted and just brought out a side of mashed potatoes at no charge. Also, later in the meal, she brought out cups of goldfish crackers for each baby and I think she also brought ice cream at the end, if I remember right. Very nice!