1. You can still get a 3 hour pass to go in for Breakfast, PS or not. All you need to do is tell them you are eating there and you get the pass.
2. Parking in Valet at CR to go to MK still is really, IMHO, beating the system. The valet is for Resort guests not wishing to self-park their cars, not for someone wishing to avoid the trams at TTC.
3. Why not walk from your parked car? DD always wants to use the tram whenever we go, but we also still have a stroller for our other DD. So DW will walk with the stroller while we ride. In all the times we did this at ALL the resorts, DW has made it no more than 5 minutes after we did. On the trip from the park, it's enough time for us to start the car up and get the AC going nice and cool. This is even if we parked out at some of the furthest spots. Really if you think about it, you are going to be walking ALL day in the parks, what is a little extra 5-10 minute walk? When DD sometimes does the walk, she loves to wave at the people riding the tram. I understand being tired at the end of the day, but since both kids are in the stroller, you adults are the only ones who will have to hoof it.
Have fun!