412622:if you already have everything else set up,then what

412622:if you already have everything else set up,then what you have to do is to make your reservation a quick one.
疑问：a quick one
求本句翻译及语言点
1—if you already have everything else set up,then what you have to do is to make your reservation a quick one.
翻译：
1.if you already have everything else set up：
翻译：
set up：1.建立，建造,创立,竖立2.准备; 安排3.引起,产生
2.then what you have to do is to make your reservation a quick one.
翻译：
make a reservation:做预定；做预约
reservation：
n.1.保留的座位[住处]等; 预订2.保留意见; 保留态度3.(美洲印第安部落的)居留地4.保留地；专用地；禁猎区，自然保护区5.预订；预订的旅馆房间(或火车票、飞机票等)
a quick one：1.赶紧的 2.[美俚]匆匆一口喝下去的酒
例句：
1.All right,just a quick one.赶紧喝一杯就回来。
2.Oh,come on!Just a quick one!一会儿就完。