Translation of contestant in German

Some of the disadvantages are the coldness, darkness and the fact that the days are a lot shorter then as in the summer. First let me tell you what I do not like about the winter. It is the following.
As promised, I am sending you in the attachment a (very) little overview of some applications we created on Vocabulix. Please send me also some infos about your activities. When would be the best time to talk?
I went to the desk of Aerolineas Mexicanas and postponed my flight by two days. I did not have to get prepared as I had done some homework before coming here. The backup plan was Isla Mujeres.