Hi, John!
This is me, Drake. Today I write this letter to let you know that my family and I will have a trip to Australia, and I would like to invite you to come with us. You can carry some clothes and snacks to make sure that we have nice photos and a full stomach. Besides, remembering to take some medicines in case we catch the flu or fever because of the bad weather. We plan for this itinerary carefully, so I am sure you will love it because we will spend time at the Spring Festival, which is a special celebration in Australia. We can have some particular meals and play games to entertain. We have various activities to do when we land there. Therefore, I am eager to receive your response.
Best regards,
Drake