I believe that you get a cupcake.
Yes it gives u free play and I think it pays for your dinner
Nope
I'm not 100 sure what they do but I have heard it's free play.
You get 10 in free play and some sort of food comp
They used to give vouchers worth $5 or more back in the day depending on your rewards level / player level. Not sure if it's the same now, but Happy Birthday either way ( Hope this Helps ) !!!
Thanks! Your answer is awaiting moderation.