is one piece episode 529 filler?

The episode starts with Luffy and the others looking for a blood donor. Unfortunately, none of the fish-men they passed volunteered.

After splitting up, Chopper spots humans going into a bar and calls the others. Meanwhile, Ishilly and a couple of friends discovered the barrel Franky trapped Caribou in, which floated in with Luffy and the others.

Thinking there might be treasure or alcohol in it, they prepare to open it. Back at Luffy's group, Sanji wakes up after having received donated blood.

He asks where he is and Camie tells him he is at her friend's house.