IMHO Boma's is one of the best buffet style meals in Orlando. Because the food tries to be a little different, it puts an African and/or Arabic slant on the more usual American/European dishes, I can see why not every dish will be to everyone's taste but I fail to see how someone couldn't find anything nice to eat there. I know that much of the food is a little spicy, but everytime I've visited they have had a large rib of beef on offer, so unless you're a veggie there is always something "standard" on offer.
AKL itself is worth the visit so if you do go give yourself time to look over the animal areas. With any Disney restaurant it's possible you will find unruly kids, that's hardly the fault of the restaurant and it's a risk you run eating anywhere on site. Granted the buffet style does encourage people to let their kids go and help themselves to something, but that's a potential problem at any buffet you chose to eat at and the genre does have the counterbalance advantage that it allows the kids to be adventurous and try something they wouldn't usually. If they don't like it , they can get something else.