I've just watched the vlog where Dave's legs wouldn't fit on the ride. I'm amazed that this was the only ride he didn't fit in to be honest, especially with the size of his upper body. One thing that struck me was how happy and animated they are at Disney. I honestly can't see them enjoying it with Barney in tow. He won't know (or be bothered) that he's at Disney, he'll be hot, overwhelmed by the noise and lights, one them will have to stay with him whilst the other one goes on the ride, and where's the fun in that? They'd be better waiting until Barney is much older, or going with family/friends to share the childcare. I think they'll end up not taking him, probably leave him with Nanny Fran, and quite frankly he'll have a better time with nanny than being wheeled round Disney in the heat. Or alternatively, they could do the decent thing and not go to Disney and take Barney on a holiday more suitable for a baby.