2 Questions

[Jeeqbit]

1. Is there a special mount we get for lvl'n all battle jobs to 90 like we got with the Amaro when we lvl'd all jobs to 80 back in SHB?

No, there is not.

2. How do I use Divine Veil correctly on PLD?, Do I use it before a big attack or after the attack hits me or some other way?

Divine Veil doesn't affect you. It's to protect your party with a shield. Before level 90, it's only a shield, so if you want it to be useful you should use it before a cast that you know hits your party, especially if they have vulnerability stacks or experience difficulty doing the content.

Divine Veil doesn't give a shield except when you get healed with a GCD heal. I recommend not healing yourself with Clemency in most cases (unless there are no enemies to attack such as in a phase transition). If a healer does not activate your Divine Veil, then that's just how it goes. Healers don't like to use GCD heals so sometimes it just won't activate.

At level 90, it's different. Your Requiescat and Blade of Faith phase heals you, so it activates Divine Veil, which means you should use it during Requiescat when a raid-wide attack is going to attack your party soon. Divine Veil also heals your party at level 90, so it's valid to use it after the attack so that your healers don't need to heal.