If they had Rey waking up, I guarantee her it would have been done much differently then they did with Finn waking up (like a pratfalling comedian)
You say that like it's some piercing insight into the filmmaker's mind.
I bet you if they had a scene of Leia waking up it would be very different to Rey, and a scene of Han waking up would be very different to Leia, and Luke waking up would be different to Han and Kylo to luke and Anakin to Kylo, etc, etc.
Rey is a different character and, not to forget, the actual star of the movie. Of course they'd handle her differently.