While there is certainly nothing to keep you from taking your 3 year old, note that HBD is more adult geared as far as decor and theme. Compared to Sci-Fi or '50's PT, it would probably be considered a little dull for the little ones. With that said, of course all children are different and have different tastes. My tween and teen love HBD because it "feels" a little more fancier than the other restaurants.