Salary, While still certainly higher than other arts organizations, you are still dealing with NGO pay. NGO employees don't get huge raises, bonuses, or commission. If you're working for the Menil, though, your priority is working in the arts at a high level.
Vacation. While the Menil gets an A for benefits, This is the one area that keeps the perfect museum from being an A+ for staff. You only get four weeks of PTO after 10 years of employment. New employees get 2 weeks for five years, and then 3 between years five and 10.
That said, the Menil pretty consistently does not hire managers and directors that have a "live-to-work" mentality. They expect excellence across the board, but there is a strong culture of non-toxic, understanding leadership.