Broody and duck eggs

hi guys

I put some duck eggs under my broody and there due in about two weeks.  I was speaking to a guy today who told me i should be spraying the eggs with water on a daily bases as the mother duck would be doing this herself?

Also he said the day before they hatch i should wet the eggs because ducks dont have a pointy beak like a chicken and they need help? is this true?

Im worried and and thinking maybe i should have put them in the incy instead? (this is my first time with duck eggs)