When Moses returns to Egypt (after the pharaoh who knew him died), he and Aaron just walk up to him and talk, even when he's bathing in the Nile. Doesn't the pharaoh have guards? The one in Genesis did. (People had to go through Joseph.) How do representatives of slaves get to talk to the pharaoh over and over? Did egyptian pharaohs historically have an open-door policy like that? Or is it supposed to seem unusual to the reader?
Example from ESV:
7:15 Go to Pharaoh in the morning, as he is going out to the water. Stand on the bank of the Nile to meet him, and take in your hand the staff that turned into a serpent. ... 20 Moses and Aaron did as the Lord commanded. In the sight of Pharaoh and in the sight of his servants he lifted up the staff and struck the water in the Nile, and all the water in the Nile turned into blood.
This is the first plague. They talked to the pharaoh in chapter 6 and during all the ten plagues. The first one is during the pharaoh's morning bath. That doesn't seem like a place where people could interrupt?