I have never stayed at the Poly or concierge level. BUT, one thing I would think about is the ages of your kids and if they are going to be going to bed early every night. I usually only stay out late once or twice during the vacation - putting the kids to bed by 9. IF they were having fireworks at MK every night, I would personally choose the theme park view, so my DH and I could watch the fireworks together while the kids are sleeping in the room.