Well done on reaching the playoff final - a great result. Train bus or car? - that's the question! Last years final was a nightmare to get away from on public transport. in fact they closed the underground station after the match. If you're going by car book your parking space early. there's some details here http://carparknear.co.uk/Wembley.html Good luck on the day.
Good luck in the Final lads - you played some great football against Brighton. A lot of teams would have sat back at 2-0 and shut up shop but fair play Derby kept on attacking. Not looking forward to seeing more of Steve McClaren next season though
Bit late now, but if any fans check this before the end of the match, I would suggest walking to Wembley Central rather than Wembley Parkway. Quite a bit further walk than Parkway, but you won't be stood still for half an hour or so as the route is longer thus people are more spread out. You can get the Bakerloo Line from there to Waterloo or London Marylebone (not sure what station goes to Derby) or Baker Street.
Gutted for you guys. To lose to a team that can only manage one shot on target in the whole match is SO disappointing.