u/GigGains

I'm about to hit Mosaic who won through credit card spend next few weeks and I still have a few perks to pick from my current level.

Does it make sense to use those perks now as I'm not clear how they reset or not when I go to the first of Mosaic?

Specifically, I'm looking at the JetBlue vacations bonus perk and wondering if I picked that before I obtain Mosaic. Will I be able to use that multiplier in addition to the standing Mosaic 1 multiplier?