Beveragino
Beveragino is a Central Otago mobile bar with four taps, available as a fully serviced option or dry hire for couples bringing their own beverages. Based in Queenstown, they handle bar setup and decoration so that side of the reception is taken care of. The self-serve tap format works well for casual outdoor events.
Their full menu and bookings live on their own site.
More vendors
Others in Otago, and vendors serving something similar.