There is so much humor during this outing to Sotherton. So much selfishness and bad behavior, my goodness.

It begins with Maria and Julia wanting to ride up in the box with Mr. Crawford and Julia gets her wish.
Happy Julia! Unhappy Maria! The former was on the barouche–box in a moment, the latter took her seat within, in gloom and mortification;....
and to see only his expressive profile as he turned with a smile to Julia, or to catch the laugh of the other, was a perpetual source of irritation, which her own sense of propriety could but just smooth over. When Julia looked back, it was with a countenance of delight, and whenever she spoke to them, it was in the highest spirits

But of course it gets flip-flopped once they're at Sotherton. Maria finally perks up a bit when she gets to brag about her future home.

It gets quite funny when they get to chapel. Everyone is at cross purposes. Julia tries to continually remind everyone (Mr. Crawford in particular) that Maria is going to be married. Mr. Crawford steps up to Maria and says
, “I do not like to see Miss Bertram so near the altar.”.
He's such a piece of work!
Julia is clueless to what's going on between Henry and Maria, continues ...
And she talked and laughed about it with so little caution as to catch the comprehension of Mr. Rushworth and his mother, and expose her sister to the whispered gallantries of her lover,.
Miss Austen with her turn of words. It's obvious that Maria should not be marrying Mr. Rushworth. I feel bad for him, even if he is clueless.

Of course there's humor in Mary's being aghast at finding out Edmund is to be a clergyman.

Once they're out on the grounds, the humor begins to wear. Julia is fuming because she's stuck with Mrs. Rushworth. Mrs. Norris takes up with the housekeeper. Is it rude for a guest to ignore the host and go directly to the housekeeper like that? It seems odd to me.

I get a bit angry at this bit
“I shall soon be rested,” said Fanny; “to sit in the shade on a fine day, and look upon verdure, is the most perfect refreshment.”

After sitting a little while Miss Crawford was up again. “I must move,” said she; “resting fatigues me. I have looked across the ha–ha till I am weary. I must go and look through that iron gate at the same view, without being able to see it so well.”

It's seems Mary is trying to contrast herself with Fanny and wants to ditch her before she's rested. Edmund with his own motives presses Fanny to stay there.