According to the stadium map, the seats available are:
North - 23
Family - 24
East Lower - 16
East Upper - 29
E1H - 101
S1A - 54
South - 46 (S1D & S1E still not available)
West Lower - 43
West Upper - 30
I hope there will be enough PIES
Looks like they've added a load more seats around the ground. Quite a few blocks were sold out before, not so many now.
Surprised they've opened S1A before S1E.