Tai Kwun opens its summer rooftop series tonight at 9 p.m. -- free entry, first-come-first-served, and the line forms on Old Bailey Street by 8:15 if last year was any guide. This weekend also has the MTR running reduced service on the Tuen Ma Line between Hung Hom and To Kwa Wan on Saturday, 10 a.m. to 3 p.m., for track maintenance, so if you are heading to Kowloon City for the roti canai, budget an extra twenty minutes or take a bus.

Weather: the HKO is carrying a hot and humid outlook through Sunday with an outside chance of an afternoon thunderstorm on Saturday. No signal expected but carry something light. Two things for Saturday with kids: the Science Museum in Tsim Sha Tsui has a free drop-in robotics session from 2 p.m. to 4 p.m. (booking not required, but it will fill up), and the City One Sha Tin pool opened its extended weekend hours on June 21 -- $17 adult, $8 child. On the civic note: Policy Address consultation opens Monday, June 29, which means this weekend is the last window before every second dinner table in Kowloon turns into a public hearing. The CK Asset HK$380 million unit at 77 Harbourview Street moved on Wednesday; that price will be the reference number every property columnist reaches for through July. Enjoy the roti. Monday will have opinions.