Unlimited First Class Upgrades Question
As a Medallion member, I'm entitled to unlimited 1st Class upgrades. And since I'm Platinum, the chart says this begins 120 hours (5 days) prior to departure.
My question pertains to moving from an existing seat to a 1st Class seat. At 120 hours, is this a change I can initiate myself on the Delta.com seat map for my flight(s) or is this something that I have to hope Delta's computer will do in priority order? (I realize that 1st Class seats may not be available or blocked-out.) Thanks.