What are the changes at the village inn? Of the patrons?

For the first part of your question:

He now hurried forth, and hastened to his old resort, the village inn - but it too was gone. A large rickety wooden building stood in its place, with great gaping windows, some of them broken and mended with old hats and petticoats, and over the door was painted, "the Union Hotel, by Jonathan Doolittle." Instead of the great tree that used to shelter the quiet little Dutch inn of yore, there now was reared a tall naked pole, with something on the top that looked like a red night-cap, and from it was fluttering a flag, on which was a singular assemblage of stars and stripes - all this was strange and incomprehensible. He recognized on the sign, however, the ruby face of King George, under which he had smoked so many a peaceful pipe; but even this was singularly metamorphosed. The red coat was changed for one of blue and buff, a sword was held in the hand instead of a sceptre, the head was decorated with a cocked hat, and underneath was painted in large characters, GENERAL WASHINGTON.

The second part of you question.....

There was, as usual, a crowd of folk about the door, but none that Rip recollected. The very character of the people seemed changed. There was a busy, bustling, disputatious tone about it, instead of the accustomed phlegm and drowsy tranquillity.