Skipper2, do not get me wrong but the food deliver method is the only thing I'm having second thoughts on your propose.
I'd cut it out.
Let me explain...
IMO a kind of "kuka" arm in Tomorow Land, despite the difficulties to make it work, it's totally plausible, but for the other 3 TTA's stations I think doesn't fit. I think you should use real people (in fact here they are the better choice).
When I talk about the difficulties to make it happen it's not only because of the Kuka/TTA movement. I think it's almost impossible to cover some points:
- Delivery a correct order to the correct TTA (we need a double/triple-check);
- Arms do not drop anything;
- Arms moving at same pace of TTAs (arround the TTA station);
- Arms keeping clear from the guests (safety);
- Guests keeping away from the arms (impossible to handle the kids and the selfies);
- What If somebody wants a extra ketchup/napkin?;
- What if we got a wrong order?;
- What to do with TTA that is dirty?;
- If something goes wrong all the ride stops like HM?
Maybe a scene just before you get the TTA station where you see the AA's "cooking" your meal or listen a character message in the TTA's speakers saying that you order it's ready could work as a plan B.