To be totally honest I prefer the Coral towers as they are closer to the casino and shops. The Royal towers are newer then Coral, but they are a further walk (a long one due to the sheer size of the resort) and the only real difference is they have flat screen TVs versus the old bigger boxes.
I will check to see if we can get a discounted rate (probably wont be as low as conference rate) for additional days. I know Mrs Professor wants to stay a few extra days also.
We will have the little professors with us along with our first little grand professor and they have been lobbying for more time too.