AFCO supplies the train tickets
If you're going down by car all I know is its at your own expense but yes you can do it
Someone else with more knowledge on it all will be along soon to tell you "ask your afco"
Certain roles need to meet different standards
For your eye test you will be sent paperwork to take to the opticians for them to tick if you meet VA1, VA2, OR VA3
V1 being the best
If you're less than VA3 as far as I know it's bar to entry
I'm not too sure, you'd have to ring your AFCO about it. I don't think it's too bad on my paperwork to go to Raleigh it just says if you wear glasses make sure you bring contact lenses for phys lessons