Photo: Wouter Hagens, CC BY-SA 3.0 via Wikimedia Commons
A tour in the morning for sunrise or evening for sunset. Also, be sure to know what is included and what not. Sunset tours do generally not include the sunset, supposedly depending on the wind, which is what they are used to say every day. It is still an impressive and inexpensive ride, even without sunrise. Each flight lasts at least 45 minutes, weather permitting.
Nevertheless, pay attention to the safety record mentioned on Wikipedia, which is bad supposedly. This is not a romantic ride with only a few people: they often cramp 21 people into the basket.
Hot air ballooning in Luxor is an aspect of the Egyptian tourist industry. Tour companies offer sunrise rides in hot-air balloons to tourists who enjoy views of ancient Thebes, the temple complexes of Karnak and Luxor, the Valley of the Kings and the Valley of the Queens.