Would you agree Rob that 5-8k of that 68k are people going to a game because its at Wembley,the home of football
I know you asked this question to Rob but in my opinion, no, not many.
Before a game our group likes to stay in the pub as long as possible and when walking up Wembley Way more often than not we see people walking away from the stadium as they can't get in. This is because tickets ain't sold on the gate and (but not the case for games against the less glamorous teams) a lot of games you have to have been a signed up to the ticket office website X amount of weeks before a game to be able to buy a ticket for the game you wanna see. This is done to stop visiting fans trying to buy a ticket when's thier team has sold out thier 3,000 allocation.
Our first (or second) home game of the season was against Chelsea and even a lot of Spurs supporters didn't realise the above criteria and was hy the crowd for that game was so low.
Not saying that there isn't tourists but the amount wouldn't be as high as you have suggested (but I wish there was cos the money from an extra 8,000 people every game would help as we are gonna need every pound we can get to help pay for the new stadium and also help towards I think the £18 million we agreed to pay Wembley for the season.)
On another note, the above figure shows how much of a great deal West Ham got paying only £2.5 million a season to rent (the more crap) Olympic Stadium and why they can offer such cheap seats to entice a new generation of supporters.