The Straw Hats, Ace, and princess Vivi were all on their way to Yuba and they had just shortened their food supplies by bribing a bunch of Dugongs so they wouldn't come with them. They had anchored their ship and were now on foot after walking through the green city.

Luffy: UGHHHH IM BURNING UP I CAN'T EVEN SWEAT ANYMORE! he was using a stick to walk

Usopp: also using a stick to walk

Nami: Luffy stop complaining so much and you won't tired yourself out so much! He's not listening.

Ace: I told you he's a handful.

Sanji: You can say that again.

Zoro: You're one to talk. pulling the wagon

Vivi: Can you two focus?

Chopper: Can't work in hot weather....he was in a wagon that Zoro was pulling