1. Donate to The Public Theater
Arguably the most legitimate way to guarantee yourself entry is to become a Summer Supporter and buy your ticket on publictheater.org. $200 gets you one reserved seat for a single production, $400 gets you two, $600 gets you three, and so on.
2. Wait in the line
If you value your money more than your time, you can wait in line for free, randomly seated tickets that the box office hands out at 12pm the day of the performance. But you can’t just show up to the park -- far from it. These tickets are so coveted that people start lining up outside the 81st St entrance, the closest one to the Natural History Museum, at around 2am, to patiently wait for the park to open... at 6am. Now, each individual (age 5+) in this line will get two free tickets, until they run out. So you could come with your crew and camp out. And if you do, tents, lawn chairs, blankets, blow-up mattresses, snacks, wine, and playing cards are all integral. But what you should do is tag-team. Have one person go at 2am to post-up with Netflix for a few hours and use up all their data, and then have the other arrive halfway through -- you don’t want to be too tired for the show, after all. Take note, though! If you’re among the last in line, you still might not get a ticket.