I Can probably return my rental car in mid of my Onsite stay(stay offsite first) to MCO to save some $, can I take the ME back to resort? Thank you ahead!
You can take inbound DME from MCO to your WDW resort on or after your resort check-in date. DME is designed this way because Disney knows that one of more guests in a room may not arrive until after other guests in the same room are already at the resort.
We once arrived at WDW by rental car from Southern Florida. We still needed the car on one of the early days of our stay for an off-site commitment. After that commitment, I took the car to MCO, returned it there, and took DME back to the resort. I had a DME reservation for a few days after our check-in date, and everything was fine.
Normally, under such circumstances, I would return the car at an on-site car rental location at WDW instead of wasting time driving to MCO and taking DME back. In this particular case, however, I was able to get a much better rate returning at MCO. The savings were so huge that it was worth the trouble.
We took DME to MCO on our check-out day.
Before you do what I did, look into returning your car at WDW instead of MCO. You'll save a lot of time. There's a "sticky" at the top of the DISboards Transportation forum about renting (and returning) cars at WDW.