This category lists companies that, for a fee, will bring observing equipment (telescopes etc.) to your site, or will let you use their equipment at their own observatory.
Examples of their customers include K-12 classes setting up educational astronomical activities, and individuals wishing to liven up their birthday party with a stargazing/star party event.
This category does not include organized star parties! These are listed in Science/Astronomy/Amateur/Star_Parties