There is a free shuttle that connects all the hotels and campground at Yulara. There are also very pleasant walking tracks between them, with views of the rock, and opportunities for wildlife spotting.
Avis (http://www.avis.com/AvisW...) and Hertz (https://www.hertz.com.au/) have car rental offices at the airport. Both also have counters in the tourist information centre located in the shopping mall of the Yulara township. The roads connecting Yulara, Uluru and Kata Tjuta are all paved and maintained, so there's no real challenge to the driving. Car rental is the best option for independent travelers. High season rates are around $100/day, but advance booking in the low season can bring the price down to half of that, which is excellent value. Beware that only 100 km per day is included, and you'll bust this limit if you drive to Kata Tjuta. You may be able to avoid this limit by booking through AutoEurope (http://www.autoeurope.com/).
AATKings
(http://www.aatkings.com.au/) and a few other companies run buses from the airport to the resort, and also from the resort to Uluru and Kata Tjuta.Uluru Express
(http://www.uluruexpress.c...) offers unlimited access to the Park from your choice of hotel at Yulara for 2/3 days for $155/170. This does not include admission fee into the Park. Admission costs an extra $25 per person. This is a great deal for those who wish to see all the attractions in the park. Other trips are available.