Join Date: Jan 2010
Location: Calgary, Alberta
Programs: Hyatt Diamond, Fairmont Platinum, Aeroplan Diamond, HHonors Gold, SPG Gold
Posts: 18,686
Not a big change if the difference is charged including the discount, on tickets bought from ticket discounters. Its a big change if customers can't upgrade discount tickets. That would be an unprecedented karfuffle at Guest Services if that policy was implemented. Lots of dissatisfied Disney goers until everyone gets up to speed.
Eventually, I'd be ok with the policy. Just buy the days you want from ticket discounters.