Final answer:
Servers may have a duty to monitor cannabis consumption to ensure a safe environment and abide by local laws, even if it is not sold by the establishment.
Step-by-step explanation:
The question addresses a specific aspect of hospitality law related to whether servers have a duty to monitor the cannabis consumption of individuals in an establishment, even when the substance isn't sold there. Servers in areas where cannabis is legal need to be aware of local laws and regulations, as these dictate the server's responsibilities. In some jurisdictions, servers may be required to ensure a safe environment for all patrons, which could include monitoring any substance consumption that may impact public safety or the establishment's operation. It is essential for servers to be well-informed about the laws relevant to their work environment to ensure the well-being of guests and the compliance of the establishment with local regulations.