Hiya Gaspar!
Welcome to planDisney!
Disneyland Resort is calling out to you to visit! I'm glad you are working on purchasing tickets.
To make sure I got the right information I tried purchasing tickets myself. While I was sorely tempted to purchase tickets myself and meet you at Disneyland Resort, I held back and focused on what you needed. (Oh, till next time) Right now, Disneyland Resort accepts as payment for tickets the following:
Disney Visa, Visa, Mastercard, Discover, American Express, Diners Club International, JCB, PayPal, "Click to Pay," Disney Gift Card, and Disney Rewards Redemption Card.
If your card from Mexico has any of the symbols for the above credit card companies such as Visa or Mastercard you are good to go! I know that sometimes international payments work perfectly fine using PayPal so consider that option as well.
There are so many new things happening at Disneyland Resort and I hope you get a chance to enjoy it!
Mickey & Minnie's Runaway Railway is one of my favorite attractions and Disneyland Park has an edge over Walt Disney World Resort's version due to the magnificent queue. Make sure to look for all the hidden Mickeys and take note of the movie posters along the wall. The details make the wait worth it.
San Fransokyo Square is open and I hope you get to meet Baymax! I have had a chance to meet him and he does give the best hugs!
I hope that your purchase happens and you have a magical time!
Happy Planning!
-Nimmy