is one piece episode 829 filler?

The Charlotte arrive at Sanji's room, with the servant panicking because Sanji is not present. However, when Mont-d'Or and Galette open the door, Sanji is there and questions the racket.

Mont-d'Or questioned Sanji about his whereabouts, as the latter confirms he was and the Big Mom Pirate Officer looks to the servant confirm if Sanji was really there. The servant nervously assured him that Sanji had been in his room the whole time.

Mont-d'Or is skeptical and glares at him, until Sanji tells him he has to prepare for the wedding.