you can have one or the other.
either an airport shuttle or shuttle to WDw and in some places US/IOA.
the only place that has both - airport shuttle and WDW transportation is Disney World.
that say - since you will end up paying for one or the other - just get a rental car from the airport.
unless there is some reason you can't.
if you want offsite near Disney
www.choicehotels.com - but even with their transportation I would get a rental car.