If you don’t catch the movie, you can always read the book (or just check out the customer reviews). From the Publishers Weekly review on Amazon:
Roberts’s sweetly vengeful dig at do-nothing husbands follows a smalltown knitting club of wives who are sick and tired of toiling over elaborate Christmas preparations that their husbands don’t appreciate. As they go on strike, the women try to stay in solidarity, while the husbands plan retaliation at the hardware store. Roberts revels in detailing the husbands’ awkward, often disastrous handling of tasks their wives habitually do for Christmas (taking the kids to see Santa, planning the party, doing up the house). By the end of this gently feminist sendup, each side learns to be grateful for the other’s efforts.