Finally got through to Ticketmaster.
Long story short, they've got no idea what they're doing.
The lovely person I spoke to explained that they must have been sold out of Fever Zone tickets when I ordered one (which seems unlikely given I ordered it on the first day you were able to do so).
They explained that I'd been put in the closest available seating to the zone - I pointed out that, no, they've put me at the complete opposite end of the ground.
They now no longer have any seats anywhere nearby the zone either.
I guess we'll have to see what happens at the ground!
Perhaps get to the ground, very early and stand outside the Gate to Fever Zone area, if you can.
Then target likely naive members of the "Sit Down Brigade", who are totally oblivious of what they are about to venture into - and suggest it's probably a good idea they swap tickets, otherwise they may not enjoy the game.
The nice security people may even let you put up a little sign, advising of the standing in the Fever Zone, and your available ticket exchange program. I'm sure you won't be Robinson Crusoe. I mean it's obviously in the interests of the security folk, that Sit Down Brigade members don't end up in the Fever Zone. Too obvious maybe.