To take advantage of these prices you will need to prove you are not a business traveller, on the way to luton airport, so you will need to give either your flight numbers or yr holiday booking reference. I don't think you will need to provide this when you arrive at the station but you may be asked to give them on yr journey from wood-green station to luton airport.
Going to the airport by train is great, you can take a nap, read a book (even at night), play travel scrabble, or just gaze out of the window... The other restriction to buying these inexpensive train tickets from the station to luton airport is that there must be at least two grown ups travelling together. But another great benefit is that children go free. All children under 5 go free, and then one child over five but under sixteen per grown up travelling on the train to the airport.
make sure you leave plenty of time to get to the airport early enough to eat, shop and so on, so check the times of trains from the station before you go. If you end up with time to kill at the airport you can always read or play a game again! As you have bought your train ticket in advance, you don't need to fret about the opening times of the station.
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