What I want to know is whether these tickets reserved for corporates/sponsors are already allocated to specific sections. Would be annoyed if seats better but no more expensive than mine suddenly became available for johnny/jenny-come latelies. Because, principle and all that.
Considering the seat map (post #18 in this thread) was greyed out (unavailable) across the prime sections of the 200 blocks and the 335-350 blocks, then I would presume that's where these sponsor tickets are. The best seats in the house.
Giving 30% of capacity to corporates and sponsors seems way over the top.