We are planning on doing 2 day park hopper plus tickets. For budget reasons we would prefer not to buy $ILL or G+. We are staying on site, AKL, very busy time of year. We will be renting a car. My family loves Animal Kingdom and Magic Kingdom but they also really love Guardians of the Galaxy which is the reason for Park Hopper tickets. My family looks forward to the sit down buffet breakfasts more than the parks and rides and cannot be missed. Without the buffet breakfasts, the trip will unravel. 
Just wondering if I am missing something, or if there is a better strategy. Wondering if we should use rental car on park days or rely on Disney Transportation.
Current plan:
1st park day: with Extra Evening Theme Park Hours at MK:
-7am TRON virtual queue, Magic Kingdom Early Entry: Space Mountain and Big Thunder Mountain before TRON Virtual Queue. Breakfast at Crystal Palace at 10:30am.
-Park hop to EPCOT before 1pm: Guardians virtual queue. Optional: Remy's standby and Test Track Single Rider.
-Return to the resort for a break.
-6pm TRON Virtual Queue
- Geyser Point for late dinner
- MK: TRON Virtual Queue, Tomorrowland Speedway, Haunted Mansion. Optional: Pirates, Jungle Cruise, Buzz, Peter Pan's Flight, Seven Dwarfs.
2nd park day:
-7am Guardians virtual queue if return time still not being enforced.
-AK Early Entry Flight of Passage, Kilimanjaro Safaris, Everest, Dinosaur and Kali River Rapids. Breakfast at Tusker House at 10:20am.
-Return to resort for a break.
-Park hop to EPCOT for Guardians virtual queue.
-EPCOT Quick Service Dinner: Regal Eagle Smokehouse.
-Park hop to Hollywood Studios: Tower of Terror, Millennium Falcon Smugglers Run Optional: Slinky Dog Dash, Toy Story Mania.

Just wondering if I am missing something, or if there is a better strategy. Wondering if we should use rental car on park days or rely on Disney Transportation.
Current plan:
1st park day: with Extra Evening Theme Park Hours at MK:
-7am TRON virtual queue, Magic Kingdom Early Entry: Space Mountain and Big Thunder Mountain before TRON Virtual Queue. Breakfast at Crystal Palace at 10:30am.
-Park hop to EPCOT before 1pm: Guardians virtual queue. Optional: Remy's standby and Test Track Single Rider.
-Return to the resort for a break.
-6pm TRON Virtual Queue
- Geyser Point for late dinner
- MK: TRON Virtual Queue, Tomorrowland Speedway, Haunted Mansion. Optional: Pirates, Jungle Cruise, Buzz, Peter Pan's Flight, Seven Dwarfs.
2nd park day:
-7am Guardians virtual queue if return time still not being enforced.
-AK Early Entry Flight of Passage, Kilimanjaro Safaris, Everest, Dinosaur and Kali River Rapids. Breakfast at Tusker House at 10:20am.
-Return to resort for a break.
-Park hop to EPCOT for Guardians virtual queue.
-EPCOT Quick Service Dinner: Regal Eagle Smokehouse.
-Park hop to Hollywood Studios: Tower of Terror, Millennium Falcon Smugglers Run Optional: Slinky Dog Dash, Toy Story Mania.