guestswith
guestswith is a term that appears to be a misspelling or a portmanteau of "guests with". In the context of lodging, hospitality, or event planning, it would typically refer to individuals who are accompanied by guests. For example, a hotel reservation might specify the number of guests with a primary booking holder. Similarly, at a wedding or party, the term could be used to describe attendees who have brought along other people.
The precise meaning of "guestswith" is highly dependent on the context in which it is used. Without