In this case you really are better off taking the bus. They run very early. So, be on a bus at about 6:45ish, going to MK. Tell the bus driver you have a 7:30 breakfast at CM's..he may take you there directly if you get lucky. Otherwise, when you get to MK, just head over to the path that runs underneath the monorail line. It takes you right to the CR...about an 8 minute walk. Then, after breakfast, either walk back to MK or take the monorail (about 20 minutes) for the rest of your day.
It is a huge pain to take your car to the TTC...much easier to take a bus and walk to CR. You are going to be in for a longish walk anyway if you park at TTC.
As far as parking at the CR....will your car get towed? Maybe not, but wrong is wrong. How would you feel if when you got back to POP, all the close to the bldg parking spaces were gone, and you had to walk a huge distance to your room from your car because those not staying at POP had taken your close to the bldg spots?! I know, only sort of the same, but that's how those that are staying in the deluxe resorts feel. They have paid for the proximity to the parks, and they don't want a ton of 'interloper' cars taking up the spots they are entitled to. That's why there is a 3 hr. parking okay....more the honour system I guess.