They don't run all night - was just on the phone to the tour operator and he said it would be risky going back to the Dam after the match as good chance of missing the train so he suggested to stay in Rotterdam for the night.
£185 - Thursday morning flight to A'Dam, return Saturday night to London (including flight and train to R'Dam, 4* hotel) - seems a but steep?? Or maybe not...... online prices are £150.