Buses do not run directly from one resort to another.For your breakfast at O'hana you can take the bus to the MK and from there either take the monorail to the Poly or the Ferry! Just if you take the ferry, be sure to take the RESORT ferry! I think if it were me, I would take the monorail...should be the third stop, IIRC. They say allow 90 min travel time for dining reservations which would mean 8:15. I think if you leave POP by 8:30, you should be okay. And then if you want the shortest quickest most direct route, there's always a cab. Of course, that won't be free though. To get to DTD is easy! There is a bus that goes there Directly from POP. It is the furtherest bus stop in front of the actual hotel. During the day it will also make a stop at Typhoon Lagoon and it stops at both DTD Market Place and DTD West Side. HTH!!