United StatesReferencing the rules on what's considered a solo run -
Player count is defined as the number of inputs. Additional player characters spawned during the course of a run (Start of Day 1 to End of Day 15) are not allowed.
Any change to player count (including any additional name plate appearance, disconnecting, adding, or removing inputs) during a day before all customers have been called/spawned will require the day to be restarted (returning to lobby, and re-entering the restaurant through the save table.)
Since player count is only described as player count in the number of inputs, rather than by unique inputs, never had a plate appearance during the day, and never had more than two players spawned during the run, this is technically a solo speedrun.
There is past precedent with Ambersz doing the opposite, by using multiple inputs from a single player to run a larger category -
Extra Milk -> Individual Dining -> High Standards -> Latte -> Affordable -> Cake Stand -> Ice Cream -> Photographic Memory -> Iced Coffee -> High Quality -> Personalized Waiting -> Splash Zone -> High Expectations -> Extra Sugar
