There is worry in Nevada about how Coronavirus has slowed tourism, and a major component in creating tourism is conventions. So can Las Vegas survive without trade shows dumping millions into the economy? Major gaming and resort companies like the Las Vegas Sands, MGM Resorts, and Wynn Resorts all emphasized on second quarter earnings calls that the convention business is a cash cow. And in the face of COVID-19 the loss of that vital business line has put the city in a bad spot. June was the third consecutive month without convention attendance. While that is largely tied to Nevada…