I've heard the pronounciation LAH-nee for Lani and NO-uh-LAH-nee for Noelani, but I don't know if those are the correct pronounciations. (Both are beautiful names IMO.)
Thanks. I sort of thought that Lani would be LAH-nee, b/c to be Lanie it would need to have an E on the end. I love exotic names and Noelani is one of my favorites :)