Any help from Washington State coffee trailer owners?

[horsepower]

Good morning, New here as I have recently embarked on a new journey. I am currently in the process of converting an old horse trailer into a coffee trailer, basically building from ground up, this whole LnI process is so very confusing for me, as the trailer will not classify as a “food truck/trailer” I will not have food except for prepackaged items, will have typical coffee shop drinks, iced, blended, hot and energy drinks.

LNI generalizes everything, and nothing specific about coffee trailers. Does anyone have any tips/advice from Washington State?