If anyone has recently used the Tarjeta Dorada Card and can offer some explanation to the actual discount.
On one part of their site they state: "The 50% discount is valid every day of the week" https://www.renfe.com/es/en/suburban/cercanias-feve/fares/discounts/over-60s
On another part: "Discounts=On AVE and Larga Distancia (long distance high-speed) trains. 25% discount on any available price. On Avant (mid-distance high-speed) trains. Monday to Friday: 25% discount. Saturdays and Sundays: 40% discount. On Media Distancia (mid-distance) trains. 40% discount"
https://www.renfe.com/es/en/viajar/prepare-your-trip/descuentos/mayores-de-60
I'm trying to figure out if it's best to buy advance tickets or just wait and buy in Spain once I purchase the senior discount card for 6E. I can confirm all but one segment of rail travel in advance.