After nine months I have just received the letter from HM Courts and Tribunals service stating my entitlement to an award.

I'd been on DLA for the last 20 years when I had the letter about switching to PIP last year. Of course I was going to be thrown off my benefit, we all know what a disgrace trying to claim PIP has become. Luckily I had won my previous tribunal (thanks ATOS and their incompetent doctor) so I had a glimmer of hope.
My telephone tribunal was last week, I must say they were very understanding and considerate. I'm sure they must be aware how terrified we must feel, especially as we may not have the support with us that we would have. The Judge even picked up on me being uncomfortable and in pain, which was really reassuring.
The most awkward question for me was how far can I walk? When I do mobilize I swing both of my legs(I'm on crutches), Most of the other time I'm in so much pain walking is the last thing on my mind so I didn't give a distance. I hoped that focusing on the pain would lead to the conclusion that I hurt so much I probably wouldn't walk far, because I don't, I get punished If I try.
Remember they cant see you, so send pictures of anything you think may help. I'm very glad I sent pictures of the muscle wastage and different wear rates on my shoes. That instantly proved the Health (not very) professional report was wrong.
So have hope. The odds really are in your favor!
If you need to say something they will listen, If you need to take 5 say so and you can.
I hope this helps
All the best with yours!