Pittsburgh's Premier Bar & Server Staffing! We hope you can find everything you need. 3 Rivers Events, formerly MK Events, is focused on providing high-quality service and customer satisfaction - we will do everything we can to meet your expectations! With a variety of offerings to choose from, we're sure you'll be happy working with us. Look around our website and if you have any comments or questions, please feel free to contact us. 3 Rivers Events provides the most extensive bar & server staffing for any event . We provide the largest selection of service options in Pittsburgh and the surrounding areas for your event. At your home, office or a venue, let 3 Rivers Events take care of you and your guests!