I am using the link that is provided on the Rick Steves Website:
I have tried 4 different credit cards so far and the website won't take ANY of them! I know that the information is being entered correctly. ( I run an ecommerce business, so I know how to place an online order!) Does anybody know whether their website is having problems with its payment gateway, or is there a problem entering a US credit card? This is very frustrating! How are you supposed to buy advance tickets if their system won't accept your credit card? I have tried 3 Visas and one Amex with no luck. I even tried changing browsers (Chrome, FireFox) and it didn't make a difference.
Is there a different website for purchasing Alhambra tickets that I can use (not a tour operator which will charge extra)?