First, let me tell you sad I was to hear the news about your uncle.
Not really good news about your dad either, but I hope they come up with some kind of precedure to help him.
Now on to your plans!
Guess what, we have never been to Tusker House - so NO comment at all!
Be warned ....... AK gets HOT in February - it gets boiling hot in the summer, so if July is anywhere near August - it is VERY hot!
And please prepare MY (

) little Max that he might get pretty soaked and that the water might swap over his head on KRR. Seen more than one crying kid leaving that ride.
Same goes for MK - it will be hot and PACKED! If you hit it towards the afternoon be aware that the park will be full and lines will be long.
LOVE the idea of CHH for dinner - yum yum tuna sandwich as you said before.
The desserts at the Wishes Dessert Party are pretty good and there is plenty of variety.
BUT ........ you will need to get up and get to the uncovered area to see the fireworks, you can NOT see them from your seat.
You might see them if you are seated at the front, but people standing in front of you will block your view of the castle and lower fireworks. If you are seated towards the back your view is blocked by the ceiling.
If you go to my home page there should be lots of photos in my summer 2009 report.
MK in the morning is a neat idea. Cooler in the morning and less people - love the opening ceremony!
Another warning ....... SAB is PACKED during the midday hours. When we stayed at the YC we would sneak into the pool right when they opened and rather later in the evening. I did not like the midday house as we didn't have much space in the pool.
Maybe you can hit a quiet pool in the midday hours and return to SAB in the later hours of the day.
We LOVE Y&Y, but if I had to ride the bus just for dinner there I am not sure I would go.
It takes quite a while to get there, long hot walk through the park ....... what about eating at B&C at the resort or going to DTD (again crowded!)
EMH at the MK will be crowded in the beginning but like in February people thin out over the 3 hour period and you are going to have loads of fun!