The Otsego County Department of Health reminds individuals that under state guidance, hosting events and gatherings may be subject to the approval of the local health department. If you are holding a nonresidential social event such as a wedding, graduation party or birthday party it is subject to those guidelines. Among those is limiting attendance to 10 people indoors and 25 people outdoors.
Source:
https://www.otsegocounty.com/departments/d-m/health_department/covid19.php