Grab, no, not in service.
Uber, works fine, loved by many locals and tourists and you can hail a car with ease. But in legal terms, still in a grey area.
Be ware of some taxi drivers in tourist areas, they rip tourists off asking several times more than than the meter.
If not comfortable with uber, it’s legitimacy, you may take MTR (a train network across the city) to most tourist places or even cultural ones.
Yup, I think MTR is the option we have, I hope we have better luck in case we need to take a taxi.Thanks for the advise, I really appreciate it @prch!
Dont mention it, enjoy.