Hi, Cheryl! Hands down, if I were taking my younger children - who are close in age to yours (girls nine and five) to any of those restaurants, it would be Teppan Edo. My kids absolutely love to watch the chef prepare their food right in front of them, and they enjoy the little bit of a show they get as a result. I also love the food there, and find the options for the children to be much nicer than the typical kids' menu fare of chicken nuggets and fries.
None of my children were ever big fans of Planet Hollywood, although they do find the restaurant itself to be kind of cool. My youngest one calls it "eating in the world", but most of the time, she's telling me she doesn't want to eat in the world. I will say, though, on our last visit there they had a chef salad on the children's menu that both of my younger kids thoroughly enjoyed.
Boma is one of my all time favorite restaurants. I love the variety of food and the different flavors you can experience. This would be my second choice, behind Teppan Edo. Boma is an all you care to eat buffet, and if you have kids with adventurous palates, this is a great place to offer them something they won't typically get at home. If, however, only some of the dining party is interested in trying new things, there are enough kid friendly and familiar things on the menu that even the most wary of diners will find something to eat.
I hope you have a wonderful vacation, and enjoy some fabulous dining!