Hello! That sounds like an exciting trip to Egypt you're planning. Here are some travel tips.

Best Time to Visit:
The best time to visit Cairo, Luxor, and Aswan is from October to April. The temperatures are cooler during these months, making it perfect for sightseeing.

Route and Accessibility:
Cairo has an international airport, so it's easily accessible. From Cairo, you can take a domestic flight or a train to Luxor and Aswan. There are also river cruises available from Luxor to Aswan. Road transfer is also an option, albeit a longer one.

Accommodation and Booking:
It's recommended to book accommodations in advance. Cairo offers a wide range of hotels from luxury to budget. In Luxor and Aswan, options might be limited, it's recommended to book your stay throughout the trip at once for convenience.

Clothing and Essentials:
You should carry lightweight clothing appropriate for hot weather, along with a sun hat, sunscreen, and sunglasses. However, do pack some light layers for cooler evenings. Comfortable shoes for walking are crucial. Carry a reusable water bottle to stay hydrated.

Health and Safety:
Ensure your routine vaccinations are up to date before traveling. Some travelers choose to get vaccinated for Hepatitis A and Typhoid. Drink only bottled water to avoid stomach issues. Safety in these cities is on par with major global cities, but practicing common sense precautions is advised.

Local Etiquette and Respect:
Egyptians are known for their hospitality. Keep in mind, appropriate dress is essential, particularly in religious sites. Try to respect the local customs and traditions. Tipping is customary in Egypt.