What Happens If It Rains?

What happens to a show at Wolf Trap when it rains?

Here's the answer, taken directly from the Frequently Asked Questions section of wolftrap.org:

WHAT HAPPENS IF IT RAINS?
All performances take place, rain or shine. If there are seats available in-house, lawn ticket holders can exchange their lawn seats for those in-house seats and pay the difference in price. If a show is sold-out in-house, the patron should come prepared for the elements. There are NO REFUNDS, exchanges, or rain checks given to ticket holders due to rain. The ushers also will not permit lawn ticket holders to move under cover unless they have upgraded their tickets at the Wolf Trap box office.