The fastest way would be to get a cab, it will cost around $16.00 - $18.00. They charge per mile not per person so it doesn't cost more for a family of 2,4 or more. I like this option for early morning breakfast because I know when my transportation will arrive and I don't have to get to the bus stop an hour before my ADR and hope I didn't just miss it!
If you want to stick to Disney transportation take the bus to MK and then you can Monorail to the Polly. You can also take a bus from the MK to the Polly but depending on wait time the Monorail will probably be a little quicker.
Just remember to be at the buss stop at sports an hour before your ADR time.