第一句：How long does the tour take?

这趟旅游要花多长时间?

A: Excuse me. How long does the tour take?

打扰一下，这趟旅游要花多长时间?

B: It takes a whole day.

需要一整天。

第二句：What time does the tour leave?

旅游团什么时候出发?

A: What time does the tour leave?

旅游团什么时候出发?

B: The bus leaves at the Xinghai Square at 8:00 a.m.

观光车将于上午八点离开星海广场。

有关询问一趟路线旅行所用时间及出发时间、地点等类似的表达法还有：

From where does the bus leave?

车从哪儿出发呢?

How long do we stop here?

我们在这儿停多长时间?

What time should we be back to the bus?

我们要什么时间回到车上来?