I can see how it ended up that length, in fairness – they have to go into a ridiculous amount of detail.
Each of the Stadiums will be described in intricate detail, with diagrams of every floor they hold and how the space will be used. This will be supported by maps and detail of each proposed host city showing transport infrastructure at a local and regional level, accommodation, media hubs, tourist activities for non-match days, and other stuff besides.
Furthermore, each host city has to be supported by a number of team bases and training camps and each of these then require their own description of facilities and transport links, as well as detailed site plans showing training pitches, team accommodation, medical and media centres, security arrangements, and so forth.
Then there are the 'fan fest' sites, places where supporters not actually attending the sites can gather and watch the match on big screens, buy merchandise, and generally have a splendid time of it. each site needs to be outlined in detail, once again supported by maps showing how the space will be used, transport links, and so forth.
That's even before we get onto very detailed information on security, regional and national politics, and details on the 'legacy' benefits that hosting the tournament would bestow upon the nation. The role of football in each host city also needs to be outlined in detail, from Sunday league and youth football all the way up to the professional clubs.
Needless to say too, finance is an important factor and FIFA need to know how much they might make out of the tournament.
The detail needed in these documents really is mindboggling, and the length of the bid book really doesn't surprise me in all honesty. I wouldn't mind having a look at it myself.
Well, that goes without saying...