Just returned from stay at the Polynesian and POFQ in December. Monorails are usually standing room only before and especially after WISHES. Recommend walking to and from CR and MK. Since you will have a rest time in Chef Mickey's, the walk should be well tolerated. Best bet is to drive to the CR for Chef Mickey's, but sounds like that is not your option.
Monorails over-crowding has turned me off to the Polynesian in favor of booking the Contemp. next visit just so I can be able to walk to and from the MK thus avoiding the monorails. From my observations, the
ECVs demand that trains stay longer at each monorail station so that metal ramps can be placed and removed. Folks wait longer for trains to arrive because of this so at each stop, many more people have been waiting to board. I'm in my 60s and next visit I'm renting an
ECV too because I got tired of being on my hurting feet yet I have to bear the consequences ECV riders introduce to the transportation systems. The Magic Kiingdom is becoming the Magic
Scooter Kingdom. Varooom! Pardon me as I cut in front of you standers in line so I can board Space Mt preferentially.
Our visit was during "value season" just after Thanksgiving weekend. Often the express monorail station at the MK was not operating. We were happy the Polynesian had a boat transport as a backup to the monorails. This more than paid for the resorts high room rates.
It is wise to plan for as little bus travel as you can avoid. One ECV can hog up to 4 seats in a bus: three to secure the four wheeler and a fourth for the rider who must transfer to a regular bus seat. That's ridiculous! Bus transport problems are killing the magic. Book the CR and an Epcot resort for three of the four parks and plan to drive to AK.