Perez is set to start the race from the pit lane. Apparently he failed to stop for the weigh bridge during FP2.
It also seems that a slipstream on the back straight can have a big advantage during qualifying. Will be interesting to see if the teams play any games.
Any lastly, the track is much more bumpy this year than in the past. They have ground down sections of the track to help, but apparently its still quite bad. Hamilton said its a bit dangerous during FP1 and Grosjeans crash in FP2 may have been partly attributed to hitting the bumps. Could make for an interesting race