We love the Grandstand section. It's the first bus stop for pickup and drop off. It has its own pool, and is close to the main pool, and lobby.
we are staying in the grandstand section right now and that first pick up and drop off is awesome
There are 5 bus stops at SSR:
Grantstand
Carousel (and Paddock)
Paddock
Congress Park
The Springs
So, no matter where you stay, you should be fairly close to a bus stop.
As noted, Grandstand is the first pick-up stop, and the first drop-off stop.
However, if boarding at Grandstand, you do have to ride thru the entire resort before heading out to the park. But getting a seat should never be a problem.
We love the Grandstand section. It's the first bus stop for pickup and drop off. It has its own pool, and is close to the main pool, and lobby.

I would say the trip to MK is about 8-10 minutes.
We have stayed at SSR twice, both times in the same building in Congress Park. I prefer the easy walk to Downtown Disney from CP over the first stop at Grandstand, but we don't have any small children so the few times we did have to stand on the bus it was no real problem.
You may be right, 8-10 might be a little short, time gets skewed sometimes. It's just under 6 miles. I wasn't including all the stops at SSR, I was thinking SSR gate to the MK. Even including the stops I think 25min is a bit long. I know it never took us that long from Congress Park to the MK. We didn't come back that way last trip so I don't know on the return.Wow! That must have been some speedy driver you had to get you to Magic Kingdom in 8-10 mins as SSR is about as far from MK as you can get (AKL might be a tad bit further). I'd say the ride is closer to the 25 min mark. Add a few mins is getting on the bus at the Grandstand section as you have to stop at all of the other stops within the resort before actually heading off to MK.