How can I choose which credit cards my guest can use when booking their reservation?

Changing which credit cards are allowed when booking a reservation can be done in the "Payments" section when building an event. Here, you can check all credit cards you would like to have on the Front-End.

You can also set up your system to check credit cards for an expiration date, down to an exact month. This can be particularly helpful to ensure payments get processed properly when guests are booking for an event that's still a ways out, so they don't book with a card that will expire months before the check-in date!