We don't have uber in Germany. I've been using them for the first time this year. The first two times my friends showed me how to order on their phones. Then they helped me install the app and I tried myself. It works really easy, the app is self explanatory. The only issue that I encountered (twice) during my travels was that the driver called because he couldn't find me, apparently the GPS was off by two buildings respectively he got lost trying to find the Disneyland pick up area.
In general bus service was the reason I got a rental car, I heard about bad connections to certain resorts a lot. That and I was going to do hotel hopping on Halloween for the characters.
I didn't see many ECVs at the All Stars though.
And I really couldn't see why that hotel has such a bad reputation with a lot of people. The room was just as big as the one in a moderate where I had stayed the trip before. The food court was a bit noisy and crowded, but I am not a breakfast person anyway. I only stopped there every morning to fill my mug and grab a bite three times. The grounds and the rooms had just enough theming not to be obnoxious for me. The room was way more quiet than the one I had stayed in at OKW, and the Cast Members were lovely. I had jokingly asked at Check In for "a good Pokemon room" because I still play Pokemon Go, and boy did the CM checking me in come through.
A friend who only stayed at Moderate and Deluxe Resorts before was with me for one night, and even she said that she might have to look at staying in the All Stars in the future to have more "play time money" in the budget because she really liked the room and the Resort in general.