For badminton event, from my experience going there on 5 days and abt 6-7 sessions and nearly every day just to see the crowd/happening on the outside:
- Transportation-wise, it was okay. First few days were a bit quiet. But there were some days where there would be people and spectators returning/going all at once to either/both Wembley Stadium and Arena..On a couple of occasions, we ended up in a sea of people trying to get on the Tubes, all at the same time, simply because there was a soccer match which also ended at the same time...
Going to/from Wembley area to/from the Olympic Park (Stratford) area was definitely a haul..
- Accommodation-wise, yes, if one can't find a bargain place to stay, one just has to deal with the overpriced hotel prices...
- Ticket-wise, i believe there were still badminton tickets available for sale up til the last few days but one has to go online and reserve the tickets (and it wasn't easy); eventhough there was a ticket box office (which was only used for people to pick up tix). I would say it was a bit easier to get than the ones in the 2008 Beijing OG which can only be bought thru touts or individuals ....But yes, the organizer could've done a better job in selling tickets @ the box office (how? that i don't know)...otherwise, yes, if one can't get them online, one has to deal with touts trying to sell tickets or thru other individuals..
- Re the (mostly empty) seating area nearby the press area, where the players, team officials, sponsors have been assigned & reserved, were pretty much full on the last day (Sunday). I guess the organizer/players decided to sell them on the last day..Overall, the arena was packed every single day starting from Day 1..
- Security-wise, it was quite tight but overall comfortable.