Yeah, another one, the same friend as before requested this one.
There was a certain hierarchy to the crew of the Going Merry. Luffy was the captain, their leader and the glue that held the mismatched crew together. Nami, however, held the power. If anyone on the crew had a secret, she'd find out about, and photograph it. She was diabolical and used the blackmail to the fullest.
This was one of those times when she used blackmail to get what she wanted.
"Nami, no."
"Are you sure?" She was using that diabolical tone again…
"Yes…"
In a second, she pulled out pictures, rather inappropriate pictures of Zoro and Sanji together.
And that was how the navigator of the Going Merry got Roronoa Zoro to carry her bags as she went shopping.
Yes, Nami held all the power.