(1) Are the players forced to enter the Woodland or can they move around as usual? Or with other words: Becomes the game board limited to the Woodlands board including the single space "Forest" of the base board?
(2) If the players can move around as usual, what happens, if another player (or the same player again) arrives at the crown of command?
(1) nothing says you 'must' enter the Woodlands, so everyone is free to roam as normal.
(2) Nothing happens, Crown of Command is 'blank' for the rest of the game.
"When the first character reaches the Crown of Command..."
(technically you land there and the game says "oh, you're playing with Alternate Endings, have you already revealed one of those? Oh, you have? Ok, carry on)