Hi myself Pragya.
I have been working as professional architect and interior designer for last 5 years.
I am quite handy with Autocad, 3D modelling software like, Sketch up , Revit, Lumion,
Sketchup, 3DS Max and Solidworks.
I provide all sorts of architectural services, e.g. Site planning, elevation, sections,
accurate 3D model of the space along with 3D rendering etc.
I have gone through your requirement, and I can really help you in 3D modeling of all sections as you described. I will show everything in 3D including the truck area, shops cafes, middle seating with fountain, and other as you described.
I will give you a much better rendering that you have attached as sample. You can see the 3D quality in my portfolio. I will produce the same for you.
Please refer to my portfolio for some of my work.
Warm Regards