Chris,
I've been up to the NW200 about five times.Its a fabulous event to see.
I used to ferry from Stranrear/Cairnryan to Larne.You used to be able to book it through MCN and get a good deal.I think they have stopped doing the discounts on the Irish ferries now tho.
The ride up the M6 is incredibly boring,but from the end of the motorway onwards is pure motorcycling heaven.Watch out for the Police around Dumfries tho,they are a bit handy with the old speed guns.

When you get over to NI there are some fabulous roads to explore,like the Antrim coast road.Stop off at the Giants Causway for the views and a bite to eat at the cafe.
I used to stay in Portrush,which is basically the centre of things.B&B's and hotels get booked up early,so dont hang around thinking about it.You should be able to get a list from the tourist boad.
The whole event is pretty laid back,very differant to the TT.Great bars to visit are,Kellys,the Alpha Bar, the Harbour Bar and,of course Joeys in Ballymoney.
Great places to watch are the Magic Roundabout,where you can walk across the road inbetween races and watch from a differant angle.For the true NW experience though the Metropole area cant be beat.

The start/finish area is also good.You can get real close to watch the start,then move around to watch at one of the chicanes.
[Edited on 7-11-2004 by KeefyB]