As a Canadian, I occasionally tip in SEA, depending on the service (I use to work in the industry as a chef, so the tipping culture is deeply engrained in me
). This said, I do recommend tipping in 2 specific scenarios : when coming out of the casino at say 5am with significant pocketed winnings, I would not be too keen on negotiating down the price of a tuktuk and thus pay the extra 1$ (or 2$) to get back without incident to the hotel. Likewise, when I would move to a new hotel and get a housekeeper to clean my room, I would tip 1$, thus increasing the odds of not having my electronics/valuables suddenly vanishing... (and the happiness that that single $ tip provides, can lead to some priceless elated receptions
).