Do you get any bonuses on your birthday?

Question

All I've seen happen is a little animation.

Answer 1

This video covers everything apart from Sc/Vi.
For Sc/Vi:

Wild Pokémon generated on the date registered as the player's birthday have a chance to have the Destiny Mark.

-Bulbapedia

I thought that the PokeMart prices decreased or something, but I can't find anything related to that anywhere.

Hope this helped.