Kata Tjuta is also known as the Olgas. Where Uluru is one monolith, this is a collection of large rocks. The collection is several times larger than Uluru. The site is some 60km or about 45 mins due west of Uluru.
The collection of rocks is huge. You can see tehm for miles, so the number of viewpoints is close to infinite. You can photograph tehm close up and capture a 'macro' view of it, you can photograph tehm from a few kilometres away in the desert, or from a plane; at night, sunset, dawn or in the middle of the day. Dont forget the canyons between the rocks too. All of these will give a differnt result.
Most people drive there. There certainly are bus trips and tours. I know there is an Airport at Alice Springs, but I think there is one at the rock too. (Almost certainly some helicopter tours available around the rock). There are no trains. IF you are coming from overseas, yes you can walk to rock or ride a pushbike there. Take several hundred litres of water though or you are highly likely to die. (If you can carry several hundred litres of water - no one will argue with you.)
If taking a car, you only need a 2 wheel drive car / RV. A 4 wheel drive obviously gives you more choices, but it is not necessary. The road to the here is paved.
I dont know. I know that there is parking, and viewing platforms, but I also know that most travel guides talk of long walks over rocks / up mountains.
Please note the following quote from the Vistors guide (see link above): "Wear sturdy footwear, sunprotection, and drink one (1) litre of water per person, per hour. Be mindful of hyponatraemia risk (low blood salts), and consider using an electrolyte product such as Hydralyte or Gastrolyte to replace lost fluids. In hot weather we recommend walking only in the cooler morning hours, with the aim to finish your walk by 11.00 am." In Australia, heat kills. Stay cool and drink lots.
The Outback is generally dry, with occasional rains that are short lived, turn the desert into mud for a day, but then create a wonderful field of flowers. Dont worry about seasons here. Just expect cold nights and very hot days. In summer it is slightly hotter. Ensure you have warm clothes and sleeping arrangements for the night, and then cool clothes with insect protection and plenty of water for the days.
Uluru Resort
Alice Springs. Alice is around 5 hours away. While it has many accomodation options, it is really too far to drive yourself and yet still enjoy the day. By bus, it might make for a long day, but be ok. Personally, I would plan to overnight at the rock.
I have never been here, but I certainly plan to go once covid is over. I will take my LowePro Backpack loaded with Linhof Technorama with Velvia 50 film for the panorama, and Canon 5DSR body, Canon 24 mm TS, Canon 16-35mm and 50mm Sigma Art Lenses, Manfrotto 190 Tripod, and of course a range of lens wipes, spare batteries, sunscreen and bug repellant.
I will definitely shoot some Linhof Fuji Velvia 50 film near dawn / sunset to get the reds of the desert. I will probably shoot some gigapan pano's also to make some big blow ups (Gigapixel). Beyond that, I will have to have a look and see.