Just remember if you take the TTC monorail to Epcot you will be bagged checked at the TTC to get on the monorail AND bag checked to get in to Epcot. If you drive, I presume that it will only be bag check at Epcot.
We would walk from Samoa to the TTC and then monorail it to Epcot, the journey was part of the process and enjoyment, however, going back multiple times gets really old doing the security lines twice each time!