To obtain an accurate idea of the summer subway experience in NYC, I recommend this activity:
1) Your bathroom and 2) as many strangers as you can rustle up.
If you have two bathrooms, use the smaller, dirtier one.
Turn the shower as hot as the water will get. Let it run until the bathroom is full of steam. If your bathroom vent is quiet and effective, do not turn it on, as this will completely spoil the effect. If, however, the vent makes a terrible sound and does not remove the damp air, by all means turn it on.
Next invite ten or twelve strangers into the bathroom. Forbid them from talking to or looking at each other. Tell them the door will open in 4 minutes. Open the door in 8 minutes—or, better yet, 15. When the door opens, allow one person to exit and three to enter. Make sure the people who leave are furthest from the door—maybe standing in the bathtub and carrying rolling suitcases or golf bags. Encourage the people leaving and entering to pass through the door simultaneously.
Every few minutes, turn the hot shower back on. (But people are standing in the shower, you say. That’s life.)
Invite someone to play the trumpet.