Update. Doing this with my three grade 7 classes (not the 8's). Meeting a "visitor" one or two classes a week. Students are only given a digital version of the stall sheet while I project the game rules. They all have the same stall location and the same visitors on the first playthrough. I will allow students to play it independently on subsequent playthroughs. We all spend time Googling what the locations are so we know what, for example, a "moor" looks like or what in the world beard lichen is.
We only finished setting up their stalls today, but my students lost all interest in DOING ANYTHING ELSE. They only want to continue The Last Tea Shop.
A job well done on creating a simple solo rpg that ~90 students want to keep playing.