But unlike school trips and work 'away days', she didn't travel by bus or coach. Oh no, it was helicopter time for the expectant Duchess.
She was whisked up to Grimsby from Kensington Palace in London, landing at Humberside Airport later than expected due to heavy fog.
PA
She met crowds, accepted flowers and did other essential Royal duties at the National Fishing Heritage Centre.
Kate, who is roughly half way through her pregnancy, looked healthy and relaxed after her recent breaks in Mustique and the Swiss Alps.
The waiting crowds were eager to catch a glimpse of the Duchess, chanting 'we want Kate' before she arrived in the town to cheers and waving flags.
PA
Kate is cramming in several engagements whilst in the area, visiting the Humberside Fire Rescue Service and officially opening Havelock Academy - a school which serves more than 1,000 pupils.
According to people who care about these things, Kate wore a coat from Hobbs and frock from Great Plains.
More on Parentdish: Is this how the Royal baby will look?