1. What is the main purpose of the memo?
2. What are the company executives required to think of before the event?
3. What does Mr. Mellows mention about accommodation expenses?
4. Which of the positions - [1], [2], [3], or [4] - does the following sentence belong to? "The exchange of information and ideas between our company's departments has never been our strong side, yet thanks to our annual retreat, we get to talk about various little things that can support our company's success."