You'll have a Great time. Bus schedule to the park is limited.

I believe they have one ride to the park and one home, usually early morning and late afternoon (around 5-6). You are better off having a car and driving into the parks or parking at downtown Disney and taking a bus to any of the parks.

There is a commuter bus that leaves from the adjacent mall and will bring you all the way to the end of International Drive.
The Mall next door is a trip in itself, unbelievable stores (not so much for the kids), but fun with them as an adventure.
The HGV Tuscany is just wonderful, When we were there last Oct 2 there was an activity every day for kids out by the pool. There is a playground .(Smalll by building one)and a grill next to the playground if you want to have your own cookout, and of course the huge pool where you could stay all day if you choose to. (We bought our own pool inflatables across the street at the Publix....

so convenient for all food and supplies).
You'll have a great time, because you will be staying at a wonderful place. Just make plans to visit attractions ahead of time, pick your days and plan down and rest days also.
