I've used Uber/Lyft from Shades of Green to the parks (and other places like the grocery store) multiple times over several trips with no problem. In 2016 I had to meet the car at the bottom of the SOG drive, but during our 2017 and 2019 trips (didn't go in 2018) the driver could come all the way up to the entry of the hotel (when returning to the hotel in a rideshare, the guard would check our hotel ID). While we do like the set schedule of the SOG buses, an Uber/Lyft makes for a very convenient trip at our own timings. Just remember with MK they can't take you to the park, and would take you to the TTC.