The phrase "extra points" refers to additional benefits or advantages that you can earn or receive beyond what is typically expected or necessary. Full definition
No need for extra points for dining or rotating bonus categories. (travelcodex.com)
You'll also earn extra points for goods and services attached to your accommodation and on your total bill with the hotel. (upgradedpoints.com)
In addition to paying all expenses possible on a credit card, it is important to make sure you are using cards that earn extra points on bonus categories when possible. (themilesgenie.com)