Simplify the following text for a Grade 11 native English-speaking person.
Original: However , his opinion of the Witch changes dramatically when she berates him for coming alone , and even more so when on their journey to the Stone Table , they encounter a group of creatures enjoying a feast provided by Father Christmas .
Simplified: However , his thoughts of the Witch changes when she berates him for coming without his siblings , and even more so when on their journey to the Stone Table they find a small group of creatures enjoying a feast made by Father Christmas .