The rejection of the proposed deal by union members and the continuation of the strike at MGM Grand Casino directly impacts MGM Resorts International, as it may lead to operational challenges and affect the company's revenue and profitability in the short term. The news is highly relevant and important to investors as labor disputes can significantly influence a company's performance. The confidence level is not at the maximum because the full extent of the impact will depend on the duration of the strike and the company's ability to mitigate its effects.