I sat in the back row of the first section - and it probably is as good as the first row of the second section.
Absolutely confirm that front row is no point - you would be straining upwards for more than half the show.
The two sections are separated by a walkway in which as cola mentioned, clowns do some mucking around as people are being seating AND the opening of the show has all the performers enter from the sides and rear. So I was craning around to be able to see them come in. That only lasts 10 - 15 mins then all the action is on the stage.
I was also sitting off 45 degrees from the centre. It didn't really matter as the show uses the whole performance space from all angles.
It was a lovely show, barrelled along so if one bit got boring it wasn't long before the next bit started - and some bits are astonishing! only about 75mins all up. enjoy!