Yes, Thursday still works for me, and the earlier time is actually better.
If you want, we can meet near the front entrance and walk over together so nobody is looking around for the room.
About the snacks, I think keeping it simple makes sense. Fruit, sparkling water, and maybe a tray of something easy to share would cover it.
You asked whether the printouts need color, and I do not think they do. The chart headings are clear enough in black and white, so regular copies should be fine.
Also, I spoke with Lena and she said she can bring the extra notepads.
For the agenda, I would put the discussion item first, then the scheduling part second, because people usually have more energy at the start.
If the group gets through everything quickly, we can use the remaining time to confirm next steps and who is taking each piece.

Yes, I checked with everyone this morning, and the revised plan should be fine.
You asked if we needed to move the workshop indoors, and at this point I would say yes because the weather looks unpredictable and people will be carrying supplies.
The room near the back hall has enough chairs, and the long table there gives us space to spread out the papers and materials without stacking things up.
I also think starting with the housekeeping notes will help because that tends to clear up the repeated questions right away.
Marcus said he can arrive a little early to unlock the cabinet, and Priya can handle the sign-in sheet if you send her the final list tonight.
For lunch, something light makes the most sense since the session is short.
If you want me to organize the timing, I can build a simple outline so each segment stays on track and no one has to rush at the end.