I was most eager to get to this section(not as eager as Mr. Collins,of course),mainly upon rereading,I noticed the way Mr. Collins built up(or tried to build up)the glamour of Rosings by such comments as"Yes, Miss Elizabeth,you will have the honour of seeing Lady Catherine de Bourgh...I have scarcely any hesitation in saying that she will include you and my sister Maria in every invitation...We dine at Rosings twice every week and are never allowed to walk home." Most of his comments are aimed at Lizzie(which she amusingly notices).
When they are finally asked to Rosings, Mr. Collins is in full hype mode"Mr. Collins was carefully instructing them in what they were to expect,that the sight of so many rooms,so many servants and so splendid a dinner might not overpower them". This aura of awe only really works on Sir William & Maria"who had been little used to company,and she looked forward to her introduction at Rosings,with as much apprehension as her father had done to his presentation at St. James"
Lizzie is quite composed and able to hold her own with Lady C,who loves to have a captive audience for her many lectures and quizzes-she's like a queen at court with Mr. Collins as her main supplicant. Notice how in her presence,Mr. Collins is much more of a background figure. Of course,the real background figure here is Charlotte,who only lets a "faint blush" escape her every now & then to show any of her true feelings. I do believe Charlotte has some contentment in her new life but between Lady C & her husband,there's not much mental breathing room!