Williamson isn't about to get caught up in all the hype around the match and forget the threat the English pose.
"There is probably a danger of overcomplicating some fo the finer parts of the pink ball game.
"They have shown different characteristics within those (eight) tests and at different stages with different conditions of the ball. It's hard to look into too much but you do want to adapt and think on your feet."
Williamson is delighted senior batsman Ross Taylor will be in the dressing room tomorrow. He provides a reassuring presence.
He has passed fit for the test, now over the quad injury which has troubled him for the last fortnight, although battling a spot of illness.
"Ross has been playing beautifully well every time he's walked to the crease. Just the calmness, the confidence and its reflected in how much success he's had this year, but probably every other year as well. He's batting amazingly well, he's a great guy to have in the group and is excited with his body intact to play tomorrow."