There was an interesting recent post on TA about saving money by booking the train on line whilst at your departure gate. That way you know if your flight is likely to be delayed before you book train tickets.
Perhaps worth using the search facility at the bottom of the page.
Mind you I have been delayed by an hour on a flight that landed on time, so departure gate time is no guarantee. (Apparently the passport hall was too busy so we were all kept on the plane after it landed)
We bought our tickets at the station and had no problem at all. We got tickets for the slower train which were cheaper and it was only 30 mins more, I don't know if it would be as easy to get them for the express train.
There should not abe an issue of getting a ticket on a tuesday afternoon.
Not wishing to be rude, but if over 60 you can purchase a tarjeta Dorada an over 60's rail card which enables you to at least 40% discount on a weekday service. Costs 6 euros and lasts a year, all you need is to present your passport, your passport number is printed on your TD. You can then go on to purchase your ticket.
Even this one journay can cover the cost of the TD.
You can use the card on local cercanias journays too, like the airport ot Malaga or on other local RENFE services in spainEdited: 24 November 2016, 10:24
I'm not sure how up to date this is malagaairport.eu/wp-content/…AlsaBus-1-2.jpeg
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