For our Sip & See (yes, yes early planner) we can either put the registry info on the invite itself or include cards the store provides. Which do you prefer?

I have received wedding invites both ways, but not baby shower invites. The cards are cute, but yet I really don't have a preference.

*I looked up some stuff about Sip & See gift giving and >ETA: something I read< said if you don't have a shower (which we are not) it's fine to provide registry info. I figure people will probably bring the baby something why not give them some direction.