It's Disney World! I can't think of any Disney restaurants (except maybe Victoria and Albert's) that I'd avoid with a young child. Mind you, I don't actually have any children, so take my opinion with a grain of salt. I think Sanaa would be a good option at lunch versus dinner if you are interested in dining there because during the daylight you can often see animals just outside the windows. It might be entertaining as a special birthday treat for your daughter! I think the choice between Boma and Jiko depends on your daughter - for example, would you take her to a steakhouse at home or would she be bored during a meal that's geared toward adults? There were definitely children in Jiko when I ate there, but it's definitely a more tranquil and high-end environment than the controlled chaos just outside at Boma.