Until the moment of the first Shuttle landing, shown live all over the world (even without CNN), I had no idea that toxic fuels would prevent the astronauts from getting out of the vehicle within minutes after it stopped.
It seems to change from mission to mission, when exactly they get out.

A capsule would have far less of those fuels to cope with. When we see a crew getting out of a Soyuz spacecraft, the delay is caused by a capsule lying flat on the ground rather than erect. (Sometimes the recovery team would first put the spacecraft in a vertical position before getting them out, sometimes they let them out even when the capsule is still sidewise). Because the crew has spent such a long time in space, they usually wait for the recovery team (except not too long ago when they landed 400 km short of their expected landing site).

Raoul