For my DD's birthdays I let them decide to do whatever they want to do that day. On Friday, they want to go to the Princess Greeting in the morning and have lunch at Triton's, but that is all they know they want to do right now. They also love ordering room service, so I am sure they will be doing that. Of course, a cake is brought at dinner. OH! And one other thing, they get a card with $10 on it for the arcade.
This will be their 4th birthday on the cruise, can to be honest, these 3 days are going to be so packed full of stuff to do they probably will hardly think about their birthdays!
I do always bring a small gift for their birthday and I give them each $50 to send at the ship's store. But that is about it.
One thing they are looking forward to doing this time is ordering "Shirley Temples" at dinner. Someone on this board said that their daughter ordered them every night, and since they are non-alcoholic drinks there was no charge for them at dinner (I do hope this is true, we will see).
DJ