Chewie having a hissy fit doesn't change that you got the same experience if you passed or failed.
Answer me this: How is it any different if your ship is towed from crashing halfway through the ride or if your controls have no impact? Either way, you get the same experience - you go through the ride and what you did meant nothing.
You didn't get the same experience.
You may have aced the flight, or barely made it out alive.
Your flight may be one smooth example of meeting all of your goals (providing such things are part of the ride) evading all attackers, shooting down bogies...
Or, a chaotic mess of ricocheting off of walls, sustaining heavy damage, and crash landing.
Plus, any possible mix of the two.
In answer to your question:
Imagine waiting an hour and a half to board a ride that you waited on for two years in the making.
You board the cockpit with oh, one or two friends or family members - plus a couple with the most obnoxious of children.
The parents let the child have too much control, and within moments the Falcon is being towed to port.
Would you go for that?
I wouldn't, and I seriously doubt Disney believes any sizable portion of guests would either.
Again in answer to your question:
Your ride wouldn't "mean nothing" if you were unable to make certain achievements, and barely brought the ship home.