Rest assured, you’ll have ample time and opportunity to fulfill this obligation. There are two main ways to do so:
Option 1: Purchase directly from the official Adahi website. Adahi is a Saudi government project that oversees sacrifices. You can purchase your Hady /Sacrifice online directly from them closer to Hajj.
Option 2: Purchase through one of Adahi’s official retailers while in Saudi Arabia. Convenient kiosks are located within the Clock Tower, and they accept both Visa credit cards and Saudi cash.