Now you have something to look forward to next weekend, plus you can try a different restaurant, too!
Believe me, I've been in that situation, too. One time it was just a comedy club, so they charged us an extra 2 dollars each and let us go in. Another time it was a theater 2 hours away, where fortunately they had some seats available so let us trade (again with a fee). The other times we weren't so lucky.