请用英语翻译以下三个句子:我们在长城逗留两个半小时,十一点离开.游览车在入口处等候,记住车号,准时...

We're going to stay at the Great Wall for 2.5hours and leave at 11 am.The bus will wait us at the entrance.Please remember the car number and return punctually.Caution to your precious belongings.