I'm not going to tell my brother, who was on his honeymoon, that our father died
I'm sorry for your loss. What is your reasoning for not telling your brother.
I want to wait till he is home and not ruin his trip.
I completely respect your desire to wait to tell him and you obviously have the best of intentions, but your father's death is a major event. Have you considered that your brother might want to know so he can properly mourn with the rest of his family?
My brother needs to enjoy his honeymoon.
Ultimately it's your call, but I do hope you think about this a bit more, as I do believe it's best to be upfront and honest with your brother in this situation.