Thanks for that. Search Angmering to Falmer and return and it shows about 2 an hour for Farmer to Brighton leg. Just search Falmer to Brighton and, as you say, it shows one every 10 mins! Computer programme can't cope.
So it's the train for me.
So to sum up the answers to my question. If you always hate queuing for any length of time it was a nightmare. If you take the more realistic view that clearing 30,000 people inevitably means maybe 30 mins queuing then it was fine. And if you are lucky with your timing after a pint there's...
National Rail are showing 2 trains an hour back to Brighton after the Southampton game. They showed the same for the Everton game despite club saying it would be a full match day service so I drove in. Was it a nightmare after Everton? Who was lying?