@ Aulani I would suggest either the lagoon or the wailana (quiet) pool to swim laps. Either one you'd have to arrive early but from what I've seen in others who are ''training'' they always begin as soon as they can anyway. The pools at Aulani, including the lazy river as the poster above mentioned, do not open until 8:00 in the morning. The lagoon you can go out as early as you want to swim there. With the Wailana pool the crowds are usually very minimal, and only a few people are in there at a time. It's also a long pool which would be more ideal than the main pool for lapping.