The present invention relates to a system and method of selling goods or services, or collecting recycle refuse using mechanized mobile merchantry, comprising positioning, by self-propelling, at least one of a mechanized mobile merchantry within a geographical boundary, allowing interaction with consumers, and effectuating selling of goods or services, or collection of recycle refuse with consumers. Other exemplary embodiments can include signaling a mechanized mobile merchantry with a consumer's mobile device to direct the merchantry to self-propel to the consumer's location, and utilizing usage logs and algorithms to optimize functionality of a fleet of merchantry and reposition the merchantry, as necessary, within a geographical boundary, to increase sales and consumer convenience. The present invention also relates to a waste collection system with option to deliver new food and beverage items includes a customer service robot comprising a slave computer and one or more waste receptacles to collect waste material. The customer service robot includes at least one robotic arm having at least three degrees of motion to facilitate collection from, e.g., tables and the like. The customer service robot is also capable of interfacing with a recycling unit and a master computer to control disposal of the collected waste.