Especially in summer, many Hong Kong residents enjoy taking junk rides through inshore waters, to visit one or more islands, maybe swim at beaches, and stop off at seafood restaurants. Mostly, the junks aren't the traditional type with sails - there are only one or two of these iconic craft left here; but are motor boats, each holding maybe 20 or more people. There's a range of "junks" - from basic wooden ones, to more glamorous pleasure cruisers. Some corporate folk book their company junks; there are also junks for hire. As well as seats and a table, even a basic junk will typically have a fridge, plus shower and toilet, making it a good base for an outing.
Aberdeen, on the west coast of Hong Kong Island, is the main base for corporate and hire junks; though it's also possible to board junks on the north coast of HK Island.
Many junk trips involve little more than bobbing across the sea to a seafood restaurant - often one of the pricey places at Sok Kwu Wan, Lamma Island; then bobbing back again. Though there's beer n wine n camaraderie, I'm not fond of such trips: partly as I live on Cheung Chau, with abundant waterfront restaurants with good food at low prices; also as there's far more to do around coastal Hong Kong than just sit, eat and drink.
Instead, I find junk trips a great way of exploring Hong Kong's inshore waters, visiting places that might be very difficult to reach another way, as well as chilling out with friends old and new.