American express cardholders have access to early presales for rihanna concert tickets in many cities. what utility does american express offer in this instance?

Time Utility

Explanation:

Time utility is the utility of providing customer or consumer satisfaction by delivering the goods at the right time, that is when the goods are beneficial and desired by the customer.

In the given case also,

American Express do not provide any discount in the concert tickets, but by providing early access to customers, for the concert, it provides them plenty of time to get the tickets, on time, so that concert tickets are easily available to them.

This creates a time utility for the customers.