9. I'll take the one with a front view.
我要向阳面的。
还能这样说：
I will book the room which faces the sunny side.
I'd like to reserve the one on the sunny side.
应用解析：
take sides of/with sb. 袒护某人；
put on side 摆架子；
on the side 作为兼职或副业
10. Could you tell me some information about the room service?
你能告诉我一些客房服务的信息吗？
还能这样说：
I'd like to know something about the room service.
Shall we talk about the room service?
应用解析：
all told 总共，一共，共计；
tell sb.'s face 给某人算命
11. We will be leaving on Sunday.
我们星期天离开。
还能这样说：
We are going to leave on Sunday.
We are about to leave on Sunday.
谚语：
Every day is not sunny.
好事不常在，好花不常开。
12. What's the rate difference?
价格有什么不同？
还能这样说：
What's the difference in price?
Please tell me the price difference?
应用解析：
all the differece (in the world) 天渊之别，大不相同；
make a difference 有很大差别；有很大的关系