why do scout and Jem have mixed feelings about Christmas?

The children love Christmas and seeing Uncle Jack but hate going to Aunt Alexandra's. Scout hates going here, because her Aunt Alexandra always tells her that she should be more ladylike - she should wear dresses and not pants, and that she should play with girls' toys like tea sets and jewelry. Aunt Alexandra hurts Scout's feeling and makes her sit at the little table in the dining room at dinner instead of the grown-up table, where Jem and Francis are sitting. Francis is Aunt Alexandra's grandson, and Scout calls him "the most boring child I ever met."