Lilo has never appeared at Aulani. Disney thought it would be a bit insensitive to have a caricature of a Hawaiian girl when there are so many real native Hawaiians working and visiting the resort.
At Aulani now. No Lilo and even Stitch isn't at the character breakfast. Only Mickey at the breakfast check in and Minnie and Gooofy come to the table. My kids did see Stitch once and got a photo.