I got mine yesterday too, and I also had sent the rebate in a day too late. I realized my mistake on Sunday afternoon (3/16) and so surprised that they would have a Sunday deadline. I was disappointed and was not going to send it in...but I woke up on 3/17 and thought that it might be worth a try.
I only received two of mine. I sent one to my house, one to my parents and one to my sisters. I received mine & my parents, but not the one from my sister's house. Hmm....I think I'm giong to have to call them.