A Nile cruise packs in the major Luxor and Aswan sites — Karnak, the Valley of the Kings, Kom Ombo, Edfu, Philae — while you unpack only once, with the ship handling transport between stops overnight. A land-only tour trades that convenience for more flexibility to extend a stay somewhere that interests you.

Nile cruiseLand-only tour
UnpackingOnce, for the whole Luxor–Aswan stretchRepeated hotel changes
FlexibilityFixed daily schedule shared with other cabinsEasier to add or extend a stop
Transport between citiesHandled overnight by the ship itselfRequires separate transfers, flights, or drives
Evening dining choiceSet by the shipWider choice of restaurants each night

The combination most itineraries actually use

Many trips combine both rather than choosing one: a few nights in Cairo by land, then a Nile cruise for the Luxor–Aswan stretch — which is why it's less an either/or choice than it first appears. See Egypt tour packages for itineraries built around exactly this combination.