A parallel came to mind when reading the comments about the scale and budget of the bids for Wikimania 2014 (which will be in London). The opening ceremony of the Beijing Olympics 2008 was a tough act to follow, and the Olympics in London 2012 was opened and closed with some panache on a much smaller budget than Beijing.
Wherever Wikimania 2015 lands, it can be a fine event, that is community driven, with all that you would expect.
Gordo