I'm honestly not sure what you'll get out of these, as I don't yet have a date to call an anniversary, BUT, these places ask for a date so why not fill one in? Feburary 29th it is! (On another note, when I find out what they are i'll update.)
Abuelo's - sign up link.
Brio Tuscan Grille - E-Club.
Buca De Beppo - sign up here.
Macaroni Grill - look on the bottom left of the page; fill in your email and then you'll go to a second page to fill in the rest of your info.
Maggiano's - here!
The Melting Pot - club fondue.
Texas De Brazil - and the sign-up is here!