Here is a link to the Aulani Villas & Views thread on the DVC Resorts board:
http://www.disboards.com/threads/aulani-villas-views-updated-02-07-2016.2907389/
I can't imagine that Aunty's Beach House (the kids' club at Aulani) will interfere at all with your enjoyment of an Ocean View villa -- no matter where your villa is located. Aunty's Beach House is at the end of the Ewa Phase 3 building, right below villas #286, #287, and #289. Ocean View villas are no lower than the 6th floor, so you'll be 5 floors above Aunty's.
Noise from Aunty's Beach House definitely won't be an issue. Once the pools, lazy river, and water slides start up in the morning (around 8:00 AM), you won't notice any noise from Aunty's!!
And don't worry about massive lines for activities. The only times you'll see lines at Aunty's is early in the morning when parents queue up to sign their kids up for certain activities. But usually the lines are gone well before 9:00 AM.
As
aulanidreamer pointed out, the self parking garage is on the Waianae side of the resort, so villas in that building will be a bit closer to your car than if you are on the Ewa side.
But each side of the resort has its own advantages. The Waianae side can get morning to mid-day sun, while the Ewa side can get afternoon sun and great views of the sunset. Take a look at the maps in the
Aulani Villas & Views thread to help get a feel for the layout of the resort. It may look like a huge resort, but I think you can get from almost any villa to any point at the resort in no more than 5 minutes.