Did you book standard or preferred? That makes a difference in location possibilities.
Grandstand is standard view and has the advantage of being the first bus stop. On the other hand, if you booked preferred you will be in either Congress Park or Springs. Congress Park is the closest walkway to "scoot" over to DS so there is that advantage.... and for the fortunate few a DS view LOL Springs is closest to The Carriage House, so food, restaurants, feature pool, etc. However, it is the last stop before buses leave the resort so I avoid it like the plague! ECV spots on the bus are hard enough to get at such a large resort... at peak times, buses are packed by the time they get there. Congress Park is slightly better, though, you can still have issues getting an ECV on the bus as well.
If I book standard, I usually request Grandstand but I have to be honest... I've owned there since the resort opened... and absolutely love it... but rarely get that request. My guess is this is this is the most frequently asked for standard location. I find the Paddock a good backup and actually prefer it in many ways... nice views, closer to DS, not far from Carriage House. For Preferred I ask for Congress Park. I avoid the Springs... and Carousel, of course (but that's another thread!).
Keep in mind that the resort is undergoing a very large refurbish which will continue for a least a couple of years, so their ability to honor requests will probably be limited in certain areas... they are working on Congress Park at the moment and will likely be doing the preferred locations first, so next up would be Springs... at least that's the best guess.
Always remember no matter where you are located or which bus you need, the driver is your friend!