If you would like to see the Pyramids, please be sure to book your hotel in Cairo or Giza for the days you plan to visit. Staying nearby will make touring much easier.
If you are interested in visiting the temples in Luxor and Aswan, it is important to block out dedicated time to travel, stay overnight, and explore properly. Luxor and Aswan are located in a completely different region of Egypt, far from Damanhour and the wedding events. Traveling there usually requires a short flight from Cairo, followed by staying in hotels in Luxor or Aswan, as the temples are spread out and require driving to reach. It is absolutely worth it, but not something that can be done quickly or last minute.
Otherwise, Alexandria is absolutely worth visiting. We recommend exploring the Corniche for ocean views, enjoying seaside cafés and fresh seafood, and visiting landmarks such as the Citadel of Qaitbay, the Catacombs of Kom El Shoqafa, and the Roman Amphitheater.