(I do have an encyclopedic knowledge of London's transport system - having completed the tube challenge twice - so hoping that might compensate in some way.... just have to hope the card gods are with us. It'll be just a very fun day out whatever happens!)
I'm sure that'll be useful! I'm sure my London transport knowledge doesn't come close to comparing, but I'll do what I can to help with strategy! And yeah, I'm sure it'll be fun whatever happens