1 This letter is for Jane.
2 Alex is writing this letter .
3 Yes. I believe, these two people are relatives. Most likely they are brother and sister. Because they love each other and their parents.
4 Alex is in Vladivostok now. He went there two weeks ago.
5 Sad as it is, there's bad news in the letter. Alex can't come home for Christmas because of bad weather. All planes were rejected. Moreover, nobody knows when the weather will get better.