What is the etiquette for giving a present to a boy who is having two parties? His parents are not together so his dad has arranged one birthday party and his mum has arranged a separate birthday party. The parents don't get on so each wants to do something special for him. DS has been invited to both. Do I need to provide two separate cards and presents or would I just get away with one? I don't want either parent thinking I'm stingy and not giving the boy anything. WWYD?