I took my MCAT June 17th also... PS was definitely a lot different than the practice tests, that's for sure
I thought that my personal statement would take only a couple of days to complete... totally wrong.
It took me atleast two weeks to complete it and atleast 20 revisers to edit it.
Because it's the most important 5300 characters you'll ever write, I would take my time. I think my main problem was sounding too 'robotic' and writing what I THOUGHT the admissions committee would want to hear. It was really hard to veer away from that, so I had to rewrite a couple of times. The hard part for me specifically was making it personal...
In my opinion, the personal statement/primary was a lot worse than the secondary
Hope that helps and let's hope we did a lot better than we thought on our mcat