Originally Posted by
beachfan
If it said "Upgrade with DL SWU/Global Upgrades (Z)" I would understand that is what Z is, but the phrase "and fare class" confuses me. Maybe I'm inappropriately parsing the sentence, but I still don't quite get what the "and fare class" means.
Doesn't matter.
Z books into the Business cabin, it is used both as an Upgrade class for SWUs AND as a regular fare class for paid tickets.