Same answers I posted for you already but others may find them useful so I'll post here again
Just so happens we used them getting to both those parks.
Went to MK last Sunday night (8/27), departing from BWI, about 7:00 PM. We were going for HEA. We waited about 10 min for a car. There had just been a very strong storm that probably impacted our wait time. The driver said the parking lot where they stage the vehicles had flooded (was half way up rims on the vehicles) plus they are currently housed in temp trailers and due to the storm were unable to access their trailers (metal+lightening=bad things). Drop off/pick up point at MK is Bus Stop 11. This has been the same spot since Minnie Van began. It is not expected to change. Driver did mention that the app will sometimes try to send you to TTC for pick up but it's wrong and to ignore it and go to bus stop 11 for pick up (this is because for other Lyft categories, it is done at TTC).
Monday (8/28) we used Minnie Van to go from MK to AK at 12:45. (because it was my birthday and I was doing a Minnie themed day). Wait was about 3 min. Driver did call to confirm we knew to go to Bus Stop 11. Drop off/pick up at AK had just changed, according to our driver. Personally, it's a bad change. They no longer use the regular Taxi/Car drop off point, which is right near the entrance. Now, they are going in where the buses go and drop you right next to the last bus stop, next to where the bus drivers stage at AK. So you have the longest possible walk to the entrance. When we do any additional trips to AK we will not be using Minnie Vans if they continue this drop off spot. I'm not paying more to walk further. We used Lyft to go back to the resort and it was so much better to walk right next to the trams and catch our ride.
As for how to get access to request one, only my Lyft app could request the Minnie Van. Because only I have a
MDE account. DH's app could not (he wanted to get the Minnie Van for my birthday).
The day we checked in at BWI I got a notice from MDE about linking the Minnie Van via Lyft. I already had Lyft so it just added the level of service while we were there. If you don't have Lyft yet, it prompts you to download the app. Since DH didn't have MDE or an account his never did that so he didn't have Minnie Van as a service option. Just being on property didn't activate the service. It needs the connection via MDE. He could have had someone at the resort add it manually but hadn't done it so he was not able to use his account for requesting a Minnie Van. So bottom line, you need MDE account on same device as Lyft or someone at resort will need to manually set Lyft app up to access Minnie Van service.