First Tier Tribunals - Appealing setting only on EHCP - anyone else gone through this?

Hi there

Recently received final EHCP for my young son which has been approved for a specialist provision, but because it was only finalised during the school holidays and consultations did not get received from schools until 2 weeks into the new term, the placements for the specialist school I wanted is already full for year ahead.  So, he is having to stay at the current mainstream school which isn't ideal.  This had to go on EHCP which I want to appeal.  

Has anybody else gone to a Tribunal before to appeal the school setting (name of school) on the EHCP? I have never been through this before.  It sounds like I don't need to go to mediation as less than 1% get changed this way.  It might as well go to the tribunal immediatey.

Would love to know peoples experiences - of the tribunal itself.  I have to put a summary together of why I am appealing the school currently on the final.  

Im stressing abit about all of this would really like some feedback.

Thanks