All being well I am going to run my first race this weekend, I picked Beefy's Nab and have been reassured that it's a great first race. I am looking forward to it

I am a little unsure on the practicalities though so perhaps you guys can help me out a bit:

1) getting there and back - I am planning on going by bus - I think this will be fine.

2) What to do with change of clothes and shoes?

I am guessing most people leave their gear in their car, but as I am travelling by bus I obviously won't have this convenience. What to do? Turn up in my running gear and not care, I don't really want to run the race carrying my gear, leave my stuff somewhere?

3) Do I need any of the regulation gear for this race? Map, compass?

I think that's it, of course I am a 100% newbie at this race business, so I am more than open to any suggestions, tips, etc.

Thanking ye kindly