How crowded/crazy are the pool and beach areas at Aulani? Can you go down in the afternoon and find a chair, or is it the kind of thing where people reserve seats with towel clips from early on in the morning? Will I see a lot of clips (should I bring my own)? What's the vibe like later in the afternoon/evening? If we're coming back from a day's excursion, can we hang out at the pool or beach for a while? Does anything happen outside in the evenings? Any suggestions for navigating the pool areas? My family is me and DH and our two adult daughters. Many thanks for any guidance!