We've been to BOG once for dinner and twice for lunch, and tried a number of different items between the five of us. Winners include the pork at lunch (although our teen said it was really good the first time and just OK the second time) and the leek soup. The grilled cheese was just OK, and the tomato soup was too acidic for our 7-year-old (he usually loves tomato soup.) The croque was OK.
In the end, we think it's among the best CS locations in MK for the combination of OK food and great atmosphere. Part of the reason we're less harsh on the food is the unique atmosphere and the fact that we had FP+ both times for lunch. So we don't expect a ton in terms of food quality and it's slightly less expensive than a TS restaurant (we have TIW and the discount applies at TS but not CS, so the cost is more similar between the two for us.) In the future, if we don't get a FP+ for BOG, we'll make an ADR for LTT. We think the food is better at LTT, but the atmosphere isn't as fun.