Well let me just say, as a DL veteran and a So Cal native myself, the hardest thing to adjust to that time of year is the heat and humidity. We are just not use to that here in CA. We, (family of 5, mom, dad and 3 kids) have been to WDW 3 times at the end of August. I believe it is just too miserable to try to stay at the park all day. To me the most important tip is to be there at RD, enjoy to park until lunch time, return to the resort for pool and rest time, then return to the park for night time fun. We always did that and really enjoyed it. I also believe that AK and HS could be half day parks for a return visitor, but for a first time visitor, and especially with younger ones, I think it is best to allow a full day. When we have been in late Aug, the crowds were very manageable, especially if you are there at RD. In my opinion, very important, I would not go in Aug. and not be there at RD. Get the most done before it gets too hot. I would say don't miss the Lion King Show at AK, that is great and something we don't have here in CA. MK still has Country Bear Jamboree, so we like to see that for old time sake. If you can, have a meal at Be Our Guest, that is a real treat. My kids are older so I am not the best one to give you advise on shows that younger ones might enjoy. If you have not yet discovered EasyWDW, it is a website with crowd calendars and a lot of great reviews and info. I hope you have a wonderful trip, if you love DL, you are going to love WDW. Feel free to PM me if you have any other questions I may be able to help you with.