Every Monday this year we are highlighting a unique Vegas wedding venue in the Ultimate Vegas Wedding Guide! Cosmopolitan is on deck today, a hotel which does not have its own wedding chapel but still offers some fun, unconventional options for weddings. Cosmopolitan http://www.cosmopolitanlasvegas.com/stay/small-groups-and-celebrations 3708 Las Vegas Boulevard South, Las Vegas |  702.698.7000 Capacity: Up to 80…