Another warning... get there early. The olympic park is huge! We did a test of our opening ceremony holding area yesterday, which is near the basketball stadium. If you go via Stratford, then I estimate it is at least a 30 minute walk from the Stratford entrance to the that part of the park... and I was walking pretty quickly. Even the stadium is at least 10 mins from the gate. The only thing that is quick to get to is the aquatic centre. Basketball, hockey, cycling, BMX, etc are all a LONG walk. Plus you have to get through security. The army/navy/air force guys are pretty efficiant, but we all know the drill by now. Get a hoard of ticketholders all trying to bring liquids, etc through and you can bet there will be a bottleneck at security.