They said people would make a million trips in and out of the city on May 1 alone.
The city was predicted to see 5.9 million arrivals and departures over the week, with at least 800,000 mainland visitors expected to visit Hong Kong, city leader John Lee Ka-chiu said earlier.
A 10-minute fireworks display on May 1 at 8pm over Victoria Harbour will be a highlight to kick off the golden week.
The show will create patterns such as smiley faces and the letters “HK”, shooting up to 100 metres (328 feet) into the night sky.
The event was timed to coincide with a shopping festival organised by the Yau Tsim Mong District Office and council, which will feature limited discounts offered by 2,200 businesses across malls, hotels and restaurants in Tsim Sha Tsui and Mong Kok.
Tsim Sha Tsui is home to some of the most popular tourist attractions, including the Avenue of Stars on the harbourfront, major…