Is it a condition for the complete reward of Hajj and Umrah to wake up with the Fajr adhan, or is it sufficient to wake up a little before the iqama and then sit after the prayer until sunrise?

The reward for 'Umrah and Hajj is contingent upon remaining in the prayer area until sunrise, then praying two rak'ahs. Therefore, whoever prays Fajr at its legally prescribed time and remains in their prayer area until sunrise will attain the aforementioned reward, even if they woke up after the adhan.