Welcome home!
We love the grandstand area of SSR. Yes, you can request a certain building or area but they can't promise you that at the time of your ressie. January will be a little cold for swimming I think....so the pool might not be a big thing for your girls. If you want a view of DTD I would suggest Congress Park. That area looks at Pleasure Island and is also easy walking distance to DTD. I love both areas.... But, if you want to be close to the main building then go with the grandstand. I'm thinking if you go in January you will most likely get the area you want....since it is not that busy in January.
Hope this helps.