if you already have everything else set up, then what you have to do is to make your reservation a quick one. 4229 什么意思?

if you already have everything else set up, then what you have to do is to make your reservation a quick one. 4229 什么意思?
想知道的语言点：
1— set up 这里怎么翻译?
2—if you already have everything else set up.have这里怎么翻译?如果你已经有了每件事情除了set up?
3—make your reservation 什么意思?
4—a quick one 怎么翻译
5—then what you have to do is to make your reservation a quick one.这里怎么有2个谓语一个是have另一个is.?