Surprised to read the inital Yale quote. Seems they go to great lengths to take care of the students.
I wouldn’t think that description wouldn’t hold true for Brown either.
If you’re not happy why would you stay if you have options?
You were smart enough to get in so I’m sure you’ll be fine wherever you land.
The obsession with the Ivies baffles me when there are so many amazing colleges out there.
Good luck.