Dursley's and the Weasleys both do not go for a vacation.
Explanation:
The Dursley's are the foster family of Harry Potter in the story and in the second book of the series there is considerable argument with Vernon the elder kid that they did not go for a vacation which he resents .
The Weasley's go neither, instead they have to stay back at home and they invite Harry over too, just to stay back with them.
This eventually forms the backdrop of the two kids Ron and Harry missing their train in the second book.
