Hi John... here's why your idea would not work;

1. security for the dealers valuable items
2. dealers and attendees enjoy being in a casino
3. amenities bathrooms, food beverage, parking
4. tables tablecloths set up ease of access signage
5. our hobby is specific to casinos and gaming items
6. Hotel rooms on property slot machines, bars on property

Just a few reasons why the dealers, the attendees and the public enjoy going to trade shows in Las Vegas