Dartmouth and Williams are more similar than they are different. They both are amazing places to attend school. Both have cohesive communities of people who love their school.
At my house my personal choice was Williams because like most of you i leaned toward no frat life. She visited Williams 3x and i thought she would be attending.
However, it was my D’s choice. While there is no frat life, they are not at a loss for drinking at Williams. She chose Dartmouth because she said that she did feel the difference between 4000 and 2000 students.