知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 I'd Use 'on' mainly because a weekend is two times (or even more). 'At' is more particular, for your smaller sized area or shorter time, Whilst on/in are employed for for a longer period durations or larger sized Areas. "Let us try to eat at an Italian https://sexcamgirls.live/