On Chateau Guillard you just stare into the water with no interactiveness.
On Temple of Anubis, King's Row and Dorado you get the regular Quick Play map with no physical restrictions, but there are also no respawns. If you die you are doomed to spectate your dead body.
In all of these, the Tab screen shows the QP "VS" instead of the Deathmatch leaderboard.