Very original idea and pretty impressive that it was made by you as a solo dev in 4-5 days as it seems to be pretty complex.
The fishing felt nice, and cooking too but I wasn't sure how to switch between items in my inventory while cooking.
*Edit: Figured it out, with mouse wheel. Pretty cool! Wish there was a score to track my performance and a losing condition if I miss too many customers or something.*
I think the game has a lot of potential with the combination if you manage to balance the pressure of visitors against fishing and cooking times.
Great job, hope you continue working on it cause it feels like a good idea to run with!