I understand that it is difficult not being able to do things sometimes. When I used to drive, I had the freedom of going between University and my home in Portsmouth (~300 Miles). When I had to give up my licence, I suddenly had to use coaches (Which have a changeover as there is no direct route).
It is unfortunate that noise and flashing lights are a trigger for you because it means that you cant go to clubs and concerts. However, it doesnt mean that this is the end of the world. As one door closes, another one opens. There are literally 100's of things to do out there that you would be able to do with your friends.
As for your driving licence, I know its hard at the moment but your time will come. If you can get a good neurologist and get control over your epilpsy, you will be on the road in no time! You will be joining your sisters before you know it! It is difficult waiting. I am waiting to get mine back at the moment, but I know I have another 9 months before that can happen. The less you think about it and occupy your mind with other things (For example: I am a student so I spend a lot of time studying), you will be amazed how quickly time flies by!
I have made my email address accessable now (I didnt realise it wasnt before!) if you want to email me.