Below the line is my original answer then I read the original post again and realized the OP only has two and half hours until Dinner. And that's if they are actually in the park at 2:30. Under those circumstances I'd probably do everything I could in the Land. Soarin, Living with the Land, the Behind the Seeds tour and anything else thats there. Or I'd do the Living Seas first then go over to the Land then dinner. Take a nice after dinner stroll riding easy rides like the boat and see Illuminations.
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Wouldn't Dec 1st be a fairly empty day? It's a Friday, Thanksgiving was the weekend before. Mousefest isn't until the end of the following week. I think you'd have a good shot at getting on the Future World rides before dinner. I Start w/Space, do Test Trak, Seas and then if time permits before my ADR, either or both of Soarin or Living with the Land. Yes that leaves off Energy, Life (If open), Spaceship Earth, Imagination and Innoventions but these can be done on a leisurely day when you also do the World Showcase. I might try Innoventions after dinner if it isn't too close to 9pm.