Your options to get from airport to Wyndham Bonnet Creek are basically the following:
1) Cab--fastest, but probably the most expensive ~$65+ one way not including tip. This was an estimate from a taxi fare calculator. I have never taken a cab to Disney before.
2) Airport limo--there are lots of services, and often discounts if you look at sites like Mouseavers or All Ears. These have the advantage of being arranged in advance, solely yours,often include a stop for groceries, and since there are 5 of you, the cost is just about the same as a shared shuttle service (Mears)
3) Rental car. Depending on when you are going, you can get cheap car rental rates that would allow you to have a car for your whole trip. I have gotten cars for as little as $15/day (tax included) through the major brands (e.g.
Alamo) At the very least, you could get one for one day and have it to run errands, make grocery stops and then return at WDW. Alamo has places on Disney property and others, eg. Dollar and
Avis, have places near Downtown Disney. Down side is, you have to take the time to rent and return. (Although with check-in kiosks, I find it a breeze to rent at Alamo/National when I go)
Hope this helps. I'm sure others have other good ideas to add. I am one of those "have to have a rental car" people, so that's the way I always go.
Maura