1. The walk through Epcot will take at least 20 mins, then wait for the monorail, ride to TTC, transfer to either the Express Monorail or the boat, get to MK. Nothing I would do. I would take the bus. For a 9am opening, be at the bus stop by 7:45 if you want to be closer to the front.
2. Boats run about an hour prior to park opening. If the boats are running at that time, you could wait 20 mins for the boat, then ride to DHS, 10 mins. I would just walk it. If walking, I would leave no later than 6:25.
Thanks! Buses and walking it is. I kinda thought that through IG to monorail seemed like a long adventure but I'd seen several posts recommending it. HS morning I will bribe sleepy teens with promises of pastries and coasters. Might even steal their phones and use the dull blue glow to entice them onward.