Yes, Thursday still works for me, and I think the earlier start will make the whole plan feel easier to manage.
If you want, we can meet near the entrance first, then decide whether to walk the long path or take the shorter route by the pond.
I checked the weather earlier, and it looks mild, so a light jacket should be enough unless the breeze picks up in the evening.
For snacks, maybe keep it simple with fruit, crackers, and those small sandwiches you mentioned because they travel well and do not make a mess.
Also, I can bring the folding chairs since they fit in my trunk without having to rearrange anything.
If Maya comes too, tell her we can shift the time by fifteen minutes because I know she finishes late on weekdays.
I do think bringing the notebook is a good idea since we kept forgetting the garden measurements last time.
As for the plant list, start with herbs, then the shade-friendly flowers, and we can sort the rest once we see how much room is actually there.

I agree that splitting the tasks would keep Saturday from feeling rushed, especially if we start with the closet and save the bookshelf for later.
The bins on the top shelf probably only need better labels, so I can handle those while you sort the art supplies on the table.
You asked whether we should donate the extra mugs, and I think that makes sense since the cabinet is already full and we keep reaching for the same four anyway.
For lunch, let us skip anything complicated and just make wraps at home because that gives us more time to finish the room before dark.
I also found the smaller extension cord, so the lamp can go near the chair without stretching a wire across the floor.
If Leo brings the little stepladder, we can finally reach the high shelf and move those old storage boxes out of the corner.
Start with the music section if you want the fastest progress, since those stacks are already grouped and only need a quick second pass.