We just stayed at the Four Seasons Maui for our honeymoon in July and although the hotel is gorgeous, there are far too many people in a crowded and small pool area. Contrary to what others have stated, I strongly disagree (at least in the month of July) that the Four Seasons Maui is a place to avoid kids (I can send pictures to prove it!)... there were screaming kids everywhere... you could avoid them by sitting by the pool, but you have to wake up at 7am to reserve your chairs... The beach is equally crowded and shared with the Grand Wailea. There were cell phones everywhere, and you should also know that it is quite dressy for a resort.
If you want quiet in Maui, I'd go to the Ritz, Prince Maui, or Kapalua Bay. Wailea is basically a resort town and although quieter than Kaanapali, it does not compare with the quiet you get on Kauai or the Big Island. BTW - we were originally supposed to stay 6 nights at the Four Seasons. We checked out and flew back to the Big Island to stay at the Mauna Lani which was paradise.
[This message has been edited by YYZ (edited 08-12-2003).]