most chinese restaurants prefer you to be able to speak mandarin, english and cantonese. they mostly put an advertisement seeking for waiters. from what i've heard, if you are willing to work late at night, the pay is higher, and also there's more tips?

yes, that's right! even one can apply under the dependent visa if they have close relatives there. it is easier than the professionals class visa as you don't need as many points to get it.