Cabral said:
Take
Quicken Spell for example. It changes casting a spell toa swift action (a free action with the limitation that you can only perform 1 swift action per round)
and says it no longer provokes an attack of opportunity. If changing the action type was sufficient to prevent attacks of opportunity, this last bit would not be needed.
Take Rapid Reload, for example. It changes loading a light crossbow to a free action,
and says it still provokes an attack of opportunity. If changing the action type were not sufficient to prevent attacks of opportunity, this last bit would not be needed.

Unfortunately, there are examples of cases where they've said "still provokes" and "no longer provokes", so it can't really be used as evidence either way
Now, I agree that if something changes the action for Stand from Prone from a move action to a free action, and says nothing further, it should still provoke. That's not what Prone Attack does, though.
KarinsDad said:
You didn't answer the question.
It's almost the opposite of the Quickdraw/Wands question, really.
The Draw a Weapon action allows you to draw a weapon or weaponlike object as a move action.
A wand is a weaponlike object for this purpose.
The Quickdraw feat allows you to draw a weapon as a free action.
Does the Quickdraw feat allow you to draw a weaponlike object as a free action?
It depends whether when the feat says "draw a weapon", it means "Take the Draw a Weapon action", or just "draw a weapon". The text of the Draw a Weapon action makes it clear that a wand is not a weapon; it is a weaponlike object, and the action allows you to either draw a weapon, or to draw a weaponlike object. The Draw a Weapon action provides for two possibilities; the Quickdraw feat provides for only one (unless we assume several words ('take the' and 'action') have been omitted for brevity).
If someone can Quickdraw a sword, but cannot Quickdraw a wand, then the action they use to draw the sword cannot be the Draw a Weapon action (modified to a free action), because the Draw a Weapon action would allow them to draw a wand.
Our problem here comes at it from the opposite direction. The Stand From Prone action is a move action that allows one to regain one's feet. The Prone Attack feat allows one to regain one's feet as a free action. Does this necessitate taking the Stand From Prone action? Well, if one can draw a weapon without using the Draw a Weapon action (by means of a feat), can one not regain one's feet without taking the Stand From Prone action (by means of a feat)?
-Hyp.