There are plenty of options for getting from Kings Cross to the ground. The
normal route is to catch the tube to Victoria and then jump on a train (every 10
minutes) to Thornton Heath or Selhurst. Alternatively you could head for London
Bridge and then catch a train (8 an hour) to Norwood Junction. Whatever you do
you'll need a One Day Travelcard (zones 1-4) which costs £4.70. I've never
actually been to Norwood Junction, but it looks worth a try because the train
service is better, it's the closest to the away section, and because of the pub
options (see later!).The last time we played at Selhurst Park we drank in the Wetherspoons opposite Thornton Heath station. Ok, it was cheap, but it was a bit of a dive. Having done some research it seems that there are some good alternatives. Check out these links:
Unofficial Palace web site pub guide
London Clarets pub guide (Burnley supporters in London)
Trying some of the pubs around Norwood Junction could be worth a try.
Internet Ground Guide
London Transport
Official Palace site