I wouldn't get one just for disney. But it is great on vacation. Its small enough to fit in your bag and its big enough to see what you are doing on line.
They are going to have the mini announced in September. If you are not worried about the camera or the Resolution of the display you can get a generation 1 Ipad for around $225-$250 on cowboom.com
It is the
Best Buy refurbish site. I have had great luck with them.
My wife can't live with out her ipad.
In my opinion you need to get the 3G. The wifi one is a waste of money.