Further heads-up for tonight: Brighton Races is on today (first race 4.50, last race 7.50). Would imagine there will be some kind of pre-match impact on the Racecourse Park and Ride.
Edit: Just seen the other thread. No impact apparently...
Or, as somebody posted after Friday's omnishambles, four people sharing a cab from Brighton station to the Amex costs about four quid each. Again, far from ideal, but always good to have a Plan B where Southern are concerned.