As a heads up, all babies are different but mine spazzed OUT at Muppets. Way too loud! Be prepared for someone to have to grab the baby and bail.
Also, while you'll get dissenting opinions, we just did a trip with a fair amount of nicer dining options and Blue Bayou was not the top of our list. For those prices I'd go with a WoC fast pass meal at Ariel's (and do not miss the cioppino!) and get the preferred viewing. We also like the buffet at Storytellers which is the same price as the less expensive stuff at BB and, in my opinion, the food is better. Certainly the atmosphere is more relaxed. BB is dark and felt really cramped and therefore noisy.