Possible Clues:

• Commuting cost
• 'This must have been paid before you can enjoy this in the restaurant car (5,4)'
• What you pay to get of course in the dining car
• What you have to pay before finding what's going in the dining car
• Cost of travel in restaurant-car?
• What you may get, of course, and what you must pay, if you go by rail
• Buying this does not entitle one to what's going in the restaurant car
• But it doesn't include meals in the dining-car
• What a traveller pays for a meal in a dining car?
• What you have to pay before you can get what's on in the restaurant car