Organisers makes Paralympic prediction
London 2012 Paralympics chief executive Paul Deighton says the Games are on course to sell out.
However, the fact organisers have decided to sell day-pass tickets means some venues will still appear to have empty seats.
Deighton said: "The whole point is to give people a chance to sample different sports so you will see a churn through the biggest chunk of most of those venues.
"You will see some empty seats there as people move through them and try different sports. We really want to make sure that we only sell a ticket where a seat actually exists and you have a good view."
Deighton added that the 14th Paralympics will have fewer accredited seats compared to the Olympics, with over 4,000 athletes set to take part between August 29 and September 9.