A lot of restaurants offer something free for your birthday, but this one is the best I've seen so far. I only wish that my birthday was in a month that we normally vacation, or that they had a location closer to me. This comes directly from the Medieval Times website.
"All lords, ladies, knights and princesses, take heed! King Philippe and Medieval Times are honored to celebrate noble guests' birthdays. Hence, the King has decreed members of his Birthday Fellowship shall be invited to the castle for a free feast and tournament on their birthdays*."
Click HERE to sign up and read more details.