Hi, ok well if it helps at all, the proceedings will be quite informal and in private (I'm assuming that this is just in front of a District Judge in the County Court). You will all be sitting around a table in a private room, with the District Judge at one end, then you and your solicitor facing him and his solicitor.
Cafcass/Social Services will be at the other end of the room, and generally they're there to observe unless they are examined on any report they've already filed.
You could ask the court usher beforehand if there's any way of your not having to sit opposite him but as you will both be giving evidence, that may not be practicable.
The judge will already have read your statement and probably a statement from your ex, so will already be aware of the main issues.
Often in these cases, the man is all bluff and bluster until it comes to going into the court room, and then agrees to sign an undertaking not to go near you. Then all that needs to be arranged is the arrangements for contact, and going on what you've said I suspect that the judge will order that contact just takes place at a contact centre under supervision for a few months until things have cooled down.
Be prepared for a long wait, and also for going into court, being adjourned whilst the solicitors try to broker an agreement about contact, and then going back in to get the judge to rubber stamp the arrangements.
You need, therefore, to arrange childcsare for most of the day if not all day, even though the time estimate may only be half an hour or so.
Wear something cool and comfortable. Not all court rooms are air conditioned. I suggest you wear a smartish pair of trousers or shirt in black, grey or navy, a plainish blouse or t shirt and take a cardi or jacket just in case the air con is working overtime.
Good luck!