I would go to the one of Publix's in Celebration. I normally go to the Water Tower one. I haven't been to the one in Celebration Pointe yet as it is pretty new. The Water Tower one might be closer but the Celebration Pointe one might be slightly quicker though.
Good question because OP can't request an Uber/Lyft without a smart phone.
(A friend or family member could request an Uber/Lyft for her, but if she doesn't have a cell phone at all I don't know how she would even have a friend or family member request an Uber/Lyft for her to get back to the hotel.)
I'm curious about Kroger, can you trust that the refrigerated stuff, would get into the fridge if it wasn't in your control? Or do you have to be at the front of the hotel to accept the grocery order?