HI, my name is Romeo
If you can provide more information, I can build the 3D buildings and rooms, then I can render different views, or why not import it into 3d virtual reality platform , where your customers can easily understand the space and look of the event.
Contact me on chat for more details, and once I understand the complete requirements I can quote a correct price for work
I've been working in web design and development for over 10 years, and last year I also did 3d modeling, , and worked on a VR project similar in concept as your project.
Regards
ROmeo