When Fred looked to him, Bill only smiled reassuringly, letting George take the lead. And lead on he did, a fact that made Bill's chest swell with pride. They hadn't been sorted Gryffindor for nothing, but this might have been the bravest thing he'd seen in a while. Well, discounting Fleur delivering their daughter. Still! Top three moment.
He let the twins have a moment to themselves after George let go, shoving his hands in his pockets and looking around Times Square. He hadn't been to the place yet since arriving, and it really was quite something. When he figured it had been long enough (but hadn't been much time at all, he was impatient), he stepped forward to embrace them both at the same time, squeezing tight. "We're all glad you showed. Even Percy."