5. Everyone's Boss is in the Hamptons
Business in New York turns into a Kafkasque maze during the summer: Regardless of the meeting your company needs to have with another firm, the person you need to have present is on vacation. You will deliver packages to empty desks and leave them unattended as you slowly back away and hope you left it in the right place. Besides, the secretary is on vacation too, so you have no one to leave the parcel with. Email after email will bounce back to you with an "out of the office" error message. When your boss goes on a mini-vacation every three weeks or so, they will claim they are "working remotely," which will just result in vague, angry emails about how slow their Internet is every other day. No work will get done until October.
This all makes you wonder why the powers that be don't give their underlings more vacation time. Don't be silly: If they did that, productivity would suffer.