Some people ha e a much higher tolerance for crowds. Honestly, if you can change it you should.Like like its split in the middle, some saying go a week before and other saying it will be ok.
The plan is to get there on Saturday and then in the evening go to epcot or HS since we will be staying in the swan and 5 day ticket and 4 day ticket difference is not that much.
On Sunday maybe go to AK? and avoid MK, then on Monday, tuesday go to MK and wednesday go to AK or if we like MK go there. Thursday we fly back.