Welcome to the Dis Jedi Mickey- That is so cool your sister is there- I hope she has a great trip!!!-- And thanks for the info on the online checkin- I am not sure I would use it- I LOVE the interaction with the CM's at check in. They are so great at the Grand!!!
MrsNesbitt- July and August are about as hot as the surface of the sun! But I love it!!! Plan to go to the parks early, ride the rides before the sleepyheads get out of bed. Then leave by 1ish and hit the pool before the afternoon rain. The evenings are usually clear again, and the rain has chased the crowds away a little.
Happy- Welcome to the Dis too! The one thing Alicnwondrln forgot about the cabanas: They are great! ENJOY! Oh and if you have kids the cabana staff plays games with the kids and even brings out pool toys for them. Very nice way to spend a day (or even part of one.)