Meeting - I'd do a Store Operations Assessment (search for it on workbench). We used to do them monthly, then we were told to just do them before Detailed Store Visits, which don't exist anymore, but your meeting will essentially be a DSV. I'd print out the most recent Starbucks Dashboard (found under Store Reports on workbench) and September MTD sales numbers. Know your staffing - how many dedicated baristas you have (the ones that are keyed as Starbucks), how many people are cross trained (keyed into another workcenter, but maybe you use them for 1 shift a week or for backup or whatever), how many you're training, and how many more you think you need for the holidays. Hopefully everyone else will chime in with anything I forgot.
Make sure everything is fully stocked and set to the Siren's Eye as best you can. I wouldn't worry too much about the AST.
I haven't had issues with the sea salt. It's best to order lots of pumpkin spice and sea salt so you can keep selling them until the ingredients expire. I normally have pumpkin spice through January. The last two years, I've had enough salt to last until about June. I'm about to open my last case of chile mocha, which should last until mid-October. I should probably order 1 more case, but... it hasn't been all that popular so I'm not sure. Ideally, it should probably last until the beginning of November when we start selling the holiday drinks.