The supervisor can't move and return to the same place he just left. If he moves he must go to another space.

Can buy only one building per turn

The supervisor moves by the value of one of the dice chosen (1-6) not the number of dice in the row.

Camels can save your cube from being shipped.

The special rules for the varying number of players (i.e. 3 players have less camels/spaces in the caravan; 4 player order on the last turn).

I believe this descrbes the designer's original rules, not the published rules. The published rules permit you to "move" the supervisor to the space it just left and send a stone to the caravan, if you modify the dice number by the third building (the one that lets you change the movement by 1-3 spaces) or by spending gold.

Another rule that can be missed is that the supervisor returns to the center space at the end of each week.