The seizure of a bow and arrow, hundreds of liquor pour outs, several arrests, and a boat crash kept emergency officials on their toes during the first night at Vancouver's Celebration of Light fireworks festival.

"Despite the amount of liquor, the event was overwhelmingly positive and family-oriented," said Vancouver police Const. Lindsey Houghton in a statement.

While exact figures aren't available, the city expected around 400,000 people to descend around English Bay for each of the three nights.

A boat crash also sent one person to treatment with facial injuries. Assistant fire chief Joe Foster said four people were on two vessels when they collided around 11 p.m., just after the Vietnam fireworks show.

Emergency officials initially scrambled to locate anyone possibly in the water, but less than half an hour later, occupants on both boats were accounted for.

"We had scattered information at the beginning just because of the number of boats out there. Everyone had a different story," he told 24 hours Sunday.

The vessels were both later towed to shore.